Question

the sum of ages of A,B and C is 90.Their ages ratio is 5:7:3.Find the difference between between A and C's age​

Answer 1

hello

5x+7x+3x=90

15x=90

x=90/15

x=30/5

x=6

5x=5*6=30

3x=3*6=18

difference between a and c age is 30-18=12

Answer 2

Step-by-step explanation:

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let 5x 7x and 3x be the present ages of a b and c respectively.

therefore 5x + 7x +3x = 90

15x = 90

x = 6

therefore, a's age= 5x = 30

b's age= 7x = 42

c's age= 3x = 18

Therefore difference between a and c's age = 30 - 18 =12