Scroll:Fraction >> Model Approach >> ps (380)


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)  

Anand spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $480 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




2)  

Raj spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $792 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




3)  

Mithra spent 14 of her salary on electronic devices and gave 13 of her salary to her sister. In the end, she was left with $545 for herself.

a) What fraction of her salary did she have left

b) How much was her salary

$ ___


Answer:_______________




4)  

Anand spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $888 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




5)  

Prem spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $460 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




6)  

Selvanayaki spent 14 of her salary on electronic devices and gave 13 of her salary to her sister. In the end, she was left with $775 for herself.

a) What fraction of her salary did she have left

b) How much was her salary

$ ___


Answer:_______________




7)  

Moorthi spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $696 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




8)  

Raj spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $832 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




9)  

Selvanayaki spent 14 of her salary on electronic devices and gave 13 of her salary to her sister. In the end, she was left with $540 for herself.

a) What fraction of her salary did she have left

b) How much was her salary

$ ___


Answer:_______________




10)  

Kalai spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $840 for himself.

a) What fraction of his salary did he have left

b) How much was his salary

$ ___


Answer:_______________




 

1)  

Anand spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $480 for himself.

a) What fraction of his salary did he have left

Answer: 16

b) How much was his salary

Answer: $2880


SOLUTION 1 :
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$480 left

(a)

Step 1: 1x32x3+1x23x2 = 3 6+26

                        = 56

Step 2: 6 6 -56=16

(b)

Step 3: 1 unit = $480

Step 4: 6 units= $480 x 6

                       =$2880



2)  

Raj spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $792 for himself.

a) What fraction of his salary did he have left

Answer: 415

b) How much was his salary

Answer: $2970


SOLUTION 1 :
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$792 left

(a)

Step 1: 1x53x5+2x35x3 = 5 15+615

                             = 1115

Step 2: 1515-1115=415

(b)

Step 3: 4 units = $792

                1 unit = $792 ÷ 4

                           = $198

Step 4: 15 units= 15 x $198

                             =$2970



3)  

Mithra spent 14 of her salary on electronic devices and gave 13 of her salary to her sister. In the end, she was left with $545 for herself.

a) What fraction of her salary did she have left

Answer: 512

b) How much was her salary

Answer: $1308


SOLUTION 1 :



 

 

 

 

 

 

 

 

 

 

 

 





 

 


Spent




 

 


Sister




 

 


$545 left





(a)


Step 1: 1x34x3+1x43x4 = 3 12+412


                              = 712


 Step 2: 1212-712 = 512


(b)


Step 3: 5 units = $545


              1 unit = $545 ÷ 5


                         = $109


Step 4: 12 units= 12 x $109


                             =$1308



4)  

Anand spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $888 for himself.

a) What fraction of his salary did he have left

Answer: 16

b) How much was his salary

Answer: $5328


SOLUTION 1 :
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$888 left

(a)

Step 1: 1x32x3+1x23x2 = 3 6+26

                        = 56

Step 2: 6 6 -56=16

(b)

Step 3: 1 unit = $888

Step 4: 6 units= $888 x 6

                       =$5328



5)  

Prem spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $460 for himself.

a) What fraction of his salary did he have left

Answer: 415

b) How much was his salary

Answer: $1725


SOLUTION 1 :
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$460 left

(a)

Step 1: 1x53x5+2x35x3 = 5 15+615

                             = 1115

Step 2: 1515-1115=415

(b)

Step 3: 4 units = $460

                1 unit = $460 ÷ 4

                           = $115

Step 4: 15 units= 15 x $115

                             =$1725



6)  

Selvanayaki spent 14 of her salary on electronic devices and gave 13 of her salary to her sister. In the end, she was left with $775 for herself.

a) What fraction of her salary did she have left

Answer: 512

b) How much was her salary

Answer: $1860


SOLUTION 1 :



 

 

 

 

 

 

 

 

 

 

 

 





 

 


Spent




 

 


Sister




 

 


$775 left





(a)


Step 1: 1x34x3+1x43x4 = 3 12+412


                              = 712


 Step 2: 1212-712 = 512


(b)


Step 3: 5 units = $775


              1 unit = $775 ÷ 5


                         = $155


Step 4: 12 units= 12 x $155


                             =$1860



7)  

Moorthi spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $696 for himself.

a) What fraction of his salary did he have left

Answer: 16

b) How much was his salary

Answer: $4176


SOLUTION 1 :
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$696 left

(a)

Step 1: 1x32x3+1x23x2 = 3 6+26

                        = 56

Step 2: 6 6 -56=16

(b)

Step 3: 1 unit = $696

Step 4: 6 units= $696 x 6

                       =$4176



8)  

Raj spent 13 of his salary on food and gave 25 of his salary to his sister. In the end, he was left with $832 for himself.

a) What fraction of his salary did he have left

Answer: 415

b) How much was his salary

Answer: $3120


SOLUTION 1 :
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$832 left

(a)

Step 1: 1x53x5+2x35x3 = 5 15+615

                             = 1115

Step 2: 1515-1115=415

(b)

Step 3: 4 units = $832

                1 unit = $832 ÷ 4

                           = $208

Step 4: 15 units= 15 x $208

                             =$3120



9)  

Selvanayaki spent 14 of her salary on electronic devices and gave 13 of her salary to her sister. In the end, she was left with $540 for herself.

a) What fraction of her salary did she have left

Answer: 512

b) How much was her salary

Answer: $1296


SOLUTION 1 :



 

 

 

 

 

 

 

 

 

 

 

 





 

 


Spent




 

 


Sister




 

 


$540 left





(a)


Step 1: 1x34x3+1x43x4 = 3 12+412


                              = 712


 Step 2: 1212-712 = 512


(b)


Step 3: 5 units = $540


              1 unit = $540 ÷ 5


                         = $108


Step 4: 12 units= 12 x $108


                             =$1296



10)  

Kalai spent 12 of his salary on electronic devices and gave 13 of his salary to his sister. In the end, he was left with $840 for himself.

a) What fraction of his salary did he have left

Answer: 16

b) How much was his salary

Answer: $5040


SOLUTION 1 :
 
 
 
 
 
 
 
 
Spent
 
 
Sister
 
 
$840 left

(a)

Step 1: 1x32x3+1x23x2 = 3 6+26

                        = 56

Step 2: 6 6 -56=16

(b)

Step 3: 1 unit = $840

Step 4: 6 units= $840 x 6

                       =$5040