Question

Age of A and B bear the ratio 7:5. after ten
years A will be 31 years. What is the age of B
now?​​

Answer 1

Answer:

Let B's age be x

7:5::31:x

$= \frac{7}{5} = \frac{31}{x} \\ = > 7x = 31 \times 5 \\ = > x = \frac{155}{7} \\ = > x = 22 \frac{1}{7}$