Question

(b) Ages of two persons A and B are in the ratio 4: 3. Five years hence, the ratio of
ages will change to 9: 7. Find their present ages.

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Answer 1

Answer:

Their Present ages :-

Person A = 4x = 40

Person B = 3x = 30

Step-by-step explanation:

Given:-

Ratio of Ages = 4 : 3

Will keep their ages as 4x and 3x.

Five years hence

= 4x + 5 : 3x + 5 = 9 : 7

= 4x + 5/3x + 5 = 9/7

= 7 (4x + 5) = 9 (3x + 5)

= 28x + 35 = 27x + 45

= x = 10

Their Present ages :-

Person A = 4x = 40

Person B = 3x = 30