Question

1.
The present ages of A and B are in the ratio 7:5. Ten years later, their ages will
be in the ratio 9:7. Find their present ages.
Tuvoare
father anchantine
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Answer 1

Answer:

Step-by-step explanation:

Let the age of A be 7x

Let the age of B be 5x

=> (7x + 10) : (5x + 10) = 9 : 7

=> (7x + 10) / (5x + 10) = 9 / 7

=> 7 (7x + 10) = 9 (5x + 10) [Cross multiplication)

=> 49x + 70 = 45x + 90

=> 49x - 45x = 90 - 70

=> 4x = 20

=> x = 20 / 4

=> x = 5

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• A's present age = 7x = (7×5) years = 35 years

• B's present age = 5x = (5×5) years = 25 years

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