Question

9. The ratio of A's age and B's age is 7:3 and the sum of their ages is 50 years. The age of A is in years)
22
35
20
15
answer​

Answer 1

Let the common factor be x

A's age = 7x

B's age = 3x

Also , 7x + 3x = 50

10x = 50

x= 5

A's age = 7x = 7*5

A's age = 35 years

B's age = 3x = 3*5

B's age = 15 years

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Answer 2

Step-by-step explanation:

let a = 7x

b=3x

7x+3x=50

10x=50

x=5

a=7x=5×7=35.

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