Question

The ages of A and B are in the ratio of 5:7. Four years from now the ratio of their ages

will be 3:4. The present age of B is .

. (a) 20 Years (b) 28 Years (c) 15 Years (d) 21 Years​

Answer 1

Answer:

Step-by-step explanation:

let present age of a be x years and b be years.

multiplying 1 with -3

multiplying 2 with 5

adding 3 and 4

put x=20 in 1

therefore the present age of b 28 years

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