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)  

Savithri bought 6600 CD - ROMs at 50 for 29 and sold all of them at 10 for 23.
How much money did Savithri make altogether


Answer:_______________




2)  

Tulasi bought 7650 CD - ROMs at 50 for 22 and sold all of them at 10 for 22.
How much money did Tulasi make altogether


Answer:_______________




3)  

Poongodi bought 7000 CD - ROMs at 50 for 21 and sold all of them at 10 for 20.
How much money did Poongodi make altogether


Answer:_______________




4)  

Chellamal bought 6100 CD - ROMs at 50 for 12 and sold all of them at 10 for 21.
How much money did Chellamal make altogether


Answer:_______________




5)  

Mithra bought 5100 CD - ROMs at 50 for 14 and sold all of them at 10 for 21.
How much money did Mithra make altogether


Answer:_______________




6)  

Swathi bought 8050 CD - ROMs at 50 for 11 and sold all of them at 10 for 23.
How much money did Swathi make altogether


Answer:_______________




7)  

Jeevini bought 5750 CD - ROMs at 50 for 10 and sold all of them at 10 for 22.
How much money did Jeevini make altogether


Answer:_______________




8)  

Poongodi bought 6550 CD - ROMs at 50 for 26 and sold all of them at 10 for 24.
How much money did Poongodi make altogether


Answer:_______________




9)  

Indra bought 7050 CD - ROMs at 50 for 30 and sold all of them at 10 for 24.
How much money did Indra make altogether


Answer:_______________




10)  

Savithri bought 6200 CD - ROMs at 50 for 10 and sold all of them at 10 for 25.
How much money did Savithri make altogether


Answer:_______________




 

1)  

Savithri bought 6600 CD - ROMs at 50 for 29 and sold all of them at 10 for 23.
How much money did Savithri make altogether

Answer: 11352


SOLUTION 1 :

Step 1:

6600 ÷ 50 = 132

Step 2:

Amount of money she spent on buying the CDs → 132 x 29 

                                                                                            = 3828

Step 3:

6600 ÷ 10 = 660

Step 4:

Amount of money she earned on selling the CDs : 660 x 23

                                                                                            = 15180
Step 5:

Amount of money she made altogether → 15180 - 3828

                                                                                 = 11352



2)  

Tulasi bought 7650 CD - ROMs at 50 for 22 and sold all of them at 10 for 22.
How much money did Tulasi make altogether

Answer: 13464


SOLUTION 1 :

Step 1:

7650 ÷ 50 = 153

Step 2:

Amount of money she spent on buying the CDs → 153 x 22 

                                                                                            = 3366

Step 3:

7650 ÷ 10 = 765

Step 4:

Amount of money she earned on selling the CDs : 765 x 22

                                                                                            = 16830
Step 5:

Amount of money she made altogether → 16830 - 3366

                                                                                 = 13464



3)  

Poongodi bought 7000 CD - ROMs at 50 for 21 and sold all of them at 10 for 20.
How much money did Poongodi make altogether

Answer: 11060


SOLUTION 1 :

Step 1:

7000 ÷ 50 = 140

Step 2:

Amount of money she spent on buying the CDs → 140 x 21 

                                                                                            = 2940

Step 3:

7000 ÷ 10 = 700

Step 4:

Amount of money she earned on selling the CDs : 700 x 20

                                                                                            = 14000
Step 5:

Amount of money she made altogether → 14000 - 2940

                                                                                 = 11060



4)  

Chellamal bought 6100 CD - ROMs at 50 for 12 and sold all of them at 10 for 21.
How much money did Chellamal make altogether

Answer: 11346


SOLUTION 1 :

Step 1:

6100 ÷ 50 = 122

Step 2:

Amount of money she spent on buying the CDs → 122 x 12 

                                                                                            = 1464

Step 3:

6100 ÷ 10 = 610

Step 4:

Amount of money she earned on selling the CDs : 610 x 21

                                                                                            = 12810
Step 5:

Amount of money she made altogether → 12810 - 1464

                                                                                 = 11346



5)  

Mithra bought 5100 CD - ROMs at 50 for 14 and sold all of them at 10 for 21.
How much money did Mithra make altogether

Answer: 9282


SOLUTION 1 :

Step 1:

5100 ÷ 50 = 102

Step 2:

Amount of money she spent on buying the CDs → 102 x 14 

                                                                                            = 1428

Step 3:

5100 ÷ 10 = 510

Step 4:

Amount of money she earned on selling the CDs : 510 x 21

                                                                                            = 10710
Step 5:

Amount of money she made altogether → 10710 - 1428

                                                                                 = 9282



6)  

Swathi bought 8050 CD - ROMs at 50 for 11 and sold all of them at 10 for 23.
How much money did Swathi make altogether

Answer: 16744


SOLUTION 1 :

Step 1:

8050 ÷ 50 = 161

Step 2:

Amount of money she spent on buying the CDs → 161 x 11 

                                                                                            = 1771

Step 3:

8050 ÷ 10 = 805

Step 4:

Amount of money she earned on selling the CDs : 805 x 23

                                                                                            = 18515
Step 5:

Amount of money she made altogether → 18515 - 1771

                                                                                 = 16744



7)  

Jeevini bought 5750 CD - ROMs at 50 for 10 and sold all of them at 10 for 22.
How much money did Jeevini make altogether

Answer: 11500


SOLUTION 1 :

Step 1:

5750 ÷ 50 = 115

Step 2:

Amount of money she spent on buying the CDs → 115 x 10 

                                                                                            = 1150

Step 3:

5750 ÷ 10 = 575

Step 4:

Amount of money she earned on selling the CDs : 575 x 22

                                                                                            = 12650
Step 5:

Amount of money she made altogether → 12650 - 1150

                                                                                 = 11500



8)  

Poongodi bought 6550 CD - ROMs at 50 for 26 and sold all of them at 10 for 24.
How much money did Poongodi make altogether

Answer: 12314


SOLUTION 1 :

Step 1:

6550 ÷ 50 = 131

Step 2:

Amount of money she spent on buying the CDs → 131 x 26 

                                                                                            = 3406

Step 3:

6550 ÷ 10 = 655

Step 4:

Amount of money she earned on selling the CDs : 655 x 24

                                                                                            = 15720
Step 5:

Amount of money she made altogether → 15720 - 3406

                                                                                 = 12314



9)  

Indra bought 7050 CD - ROMs at 50 for 30 and sold all of them at 10 for 24.
How much money did Indra make altogether

Answer: 12690


SOLUTION 1 :

Step 1:

7050 ÷ 50 = 141

Step 2:

Amount of money she spent on buying the CDs → 141 x 30 

                                                                                            = 4230

Step 3:

7050 ÷ 10 = 705

Step 4:

Amount of money she earned on selling the CDs : 705 x 24

                                                                                            = 16920
Step 5:

Amount of money she made altogether → 16920 - 4230

                                                                                 = 12690



10)  

Savithri bought 6200 CD - ROMs at 50 for 10 and sold all of them at 10 for 25.
How much money did Savithri make altogether

Answer: 14260


SOLUTION 1 :

Step 1:

6200 ÷ 50 = 124

Step 2:

Amount of money she spent on buying the CDs → 124 x 10 

                                                                                            = 1240

Step 3:

6200 ÷ 10 = 620

Step 4:

Amount of money she earned on selling the CDs : 620 x 25

                                                                                            = 15500
Step 5:

Amount of money she made altogether → 15500 - 1240

                                                                                 = 14260