Question

A woman is 43 years old, and her daughter is 15 years old. How many years will

it be before the woman's age is just twice her daughter's?

Answer 1

13.

Explanation:

1) if the required number of years is 'x', then it is possbile to make up the equation:

43+x=2(15+x);

2) finally, x=13 [years].