Scroll:Whole Numbers >> Four Operations >> ps (504)

Written Instructions:

For each Multiple Choice Question (MCQ), four options are given. One of them is the correct answer. Make your choice (1,2,3 or 4). Write your answers in the brackets provided..

For each Short Answer Question(SAQ) and Long Answer Question(LAQ), write your answers in the blanks provided.

Leave your answers in the simplest form or correct to two decimal places.


 

1)  

Ponnalagu bought 8800 CD - ROMs at 50 for 29 and sold all of them at 10 for 21.
How much money did Ponnalagu make altogether


Answer:_______________




2)  

Tamilselvi bought 7450 CD - ROMs at 50 for 18 and sold all of them at 10 for 21.
How much money did Tamilselvi make altogether


Answer:_______________




3)  

Poongodi bought 8650 CD - ROMs at 50 for 14 and sold all of them at 10 for 24.
How much money did Poongodi make altogether


Answer:_______________




4)  

Tulasi bought 6800 CD - ROMs at 50 for 17 and sold all of them at 10 for 25.
How much money did Tulasi make altogether


Answer:_______________




5)  

Kumutha bought 6400 CD - ROMs at 50 for 17 and sold all of them at 10 for 20.
How much money did Kumutha make altogether


Answer:_______________




6)  

Poovazhagi bought 7900 CD - ROMs at 50 for 13 and sold all of them at 10 for 25.
How much money did Poovazhagi make altogether


Answer:_______________




7)  

Pavi bought 6800 CD - ROMs at 50 for 24 and sold all of them at 10 for 22.
How much money did Pavi make altogether


Answer:_______________




8)  

Nandini bought 7700 CD - ROMs at 50 for 18 and sold all of them at 10 for 21.
How much money did Nandini make altogether


Answer:_______________




9)  

Panimalar bought 7250 CD - ROMs at 50 for 21 and sold all of them at 10 for 23.
How much money did Panimalar make altogether


Answer:_______________




10)  

Panimalar bought 7550 CD - ROMs at 50 for 13 and sold all of them at 10 for 20.
How much money did Panimalar make altogether


Answer:_______________




 

1)  

Ponnalagu bought 8800 CD - ROMs at 50 for 29 and sold all of them at 10 for 21.
How much money did Ponnalagu make altogether

Answer: 13376


SOLUTION 1 :

Step 1:

8800 ÷ 50 = 176

Step 2:

Amount of money she spent on buying the CDs → 176 x 29 

                                                                                            = 5104

Step 3:

8800 ÷ 10 = 880

Step 4:

Amount of money she earned on selling the CDs : 880 x 21

                                                                                            = 18480
Step 5:

Amount of money she made altogether → 18480 - 5104

                                                                                 = 13376



2)  

Tamilselvi bought 7450 CD - ROMs at 50 for 18 and sold all of them at 10 for 21.
How much money did Tamilselvi make altogether

Answer: 12963


SOLUTION 1 :

Step 1:

7450 ÷ 50 = 149

Step 2:

Amount of money she spent on buying the CDs → 149 x 18 

                                                                                            = 2682

Step 3:

7450 ÷ 10 = 745

Step 4:

Amount of money she earned on selling the CDs : 745 x 21

                                                                                            = 15645
Step 5:

Amount of money she made altogether → 15645 - 2682

                                                                                 = 12963



3)  

Poongodi bought 8650 CD - ROMs at 50 for 14 and sold all of them at 10 for 24.
How much money did Poongodi make altogether

Answer: 18338


SOLUTION 1 :

Step 1:

8650 ÷ 50 = 173

Step 2:

Amount of money she spent on buying the CDs → 173 x 14 

                                                                                            = 2422

Step 3:

8650 ÷ 10 = 865

Step 4:

Amount of money she earned on selling the CDs : 865 x 24

                                                                                            = 20760
Step 5:

Amount of money she made altogether → 20760 - 2422

                                                                                 = 18338



4)  

Tulasi bought 6800 CD - ROMs at 50 for 17 and sold all of them at 10 for 25.
How much money did Tulasi make altogether

Answer: 14688


SOLUTION 1 :

Step 1:

6800 ÷ 50 = 136

Step 2:

Amount of money she spent on buying the CDs → 136 x 17 

                                                                                            = 2312

Step 3:

6800 ÷ 10 = 680

Step 4:

Amount of money she earned on selling the CDs : 680 x 25

                                                                                            = 17000
Step 5:

Amount of money she made altogether → 17000 - 2312

                                                                                 = 14688



5)  

Kumutha bought 6400 CD - ROMs at 50 for 17 and sold all of them at 10 for 20.
How much money did Kumutha make altogether

Answer: 10624


SOLUTION 1 :

Step 1:

6400 ÷ 50 = 128

Step 2:

Amount of money she spent on buying the CDs → 128 x 17 

                                                                                            = 2176

Step 3:

6400 ÷ 10 = 640

Step 4:

Amount of money she earned on selling the CDs : 640 x 20

                                                                                            = 12800
Step 5:

Amount of money she made altogether → 12800 - 2176

                                                                                 = 10624



6)  

Poovazhagi bought 7900 CD - ROMs at 50 for 13 and sold all of them at 10 for 25.
How much money did Poovazhagi make altogether

Answer: 17696


SOLUTION 1 :

Step 1:

7900 ÷ 50 = 158

Step 2:

Amount of money she spent on buying the CDs → 158 x 13 

                                                                                            = 2054

Step 3:

7900 ÷ 10 = 790

Step 4:

Amount of money she earned on selling the CDs : 790 x 25

                                                                                            = 19750
Step 5:

Amount of money she made altogether → 19750 - 2054

                                                                                 = 17696



7)  

Pavi bought 6800 CD - ROMs at 50 for 24 and sold all of them at 10 for 22.
How much money did Pavi make altogether

Answer: 11696


SOLUTION 1 :

Step 1:

6800 ÷ 50 = 136

Step 2:

Amount of money she spent on buying the CDs → 136 x 24 

                                                                                            = 3264

Step 3:

6800 ÷ 10 = 680

Step 4:

Amount of money she earned on selling the CDs : 680 x 22

                                                                                            = 14960
Step 5:

Amount of money she made altogether → 14960 - 3264

                                                                                 = 11696



8)  

Nandini bought 7700 CD - ROMs at 50 for 18 and sold all of them at 10 for 21.
How much money did Nandini make altogether

Answer: 13398


SOLUTION 1 :

Step 1:

7700 ÷ 50 = 154

Step 2:

Amount of money she spent on buying the CDs → 154 x 18 

                                                                                            = 2772

Step 3:

7700 ÷ 10 = 770

Step 4:

Amount of money she earned on selling the CDs : 770 x 21

                                                                                            = 16170
Step 5:

Amount of money she made altogether → 16170 - 2772

                                                                                 = 13398



9)  

Panimalar bought 7250 CD - ROMs at 50 for 21 and sold all of them at 10 for 23.
How much money did Panimalar make altogether

Answer: 13630


SOLUTION 1 :

Step 1:

7250 ÷ 50 = 145

Step 2:

Amount of money she spent on buying the CDs → 145 x 21 

                                                                                            = 3045

Step 3:

7250 ÷ 10 = 725

Step 4:

Amount of money she earned on selling the CDs : 725 x 23

                                                                                            = 16675
Step 5:

Amount of money she made altogether → 16675 - 3045

                                                                                 = 13630



10)  

Panimalar bought 7550 CD - ROMs at 50 for 13 and sold all of them at 10 for 20.
How much money did Panimalar make altogether

Answer: 13137


SOLUTION 1 :

Step 1:

7550 ÷ 50 = 151

Step 2:

Amount of money she spent on buying the CDs → 151 x 13 

                                                                                            = 1963

Step 3:

7550 ÷ 10 = 755

Step 4:

Amount of money she earned on selling the CDs : 755 x 20

                                                                                            = 15100
Step 5:

Amount of money she made altogether → 15100 - 1963

                                                                                 = 13137