Question

The current ages of two brothers add up to 42. A few years ago, when the elder brother was at the current age of the younger brother, the younger brother was exactly half the elder brother's current age, How old is the elder brother now?

Answer 1

The elder brother is 28

Explanation:

Let the older brother = x

Let the younger brother = y

x + y = 42

y = 1/2 x Put this value of y into the equation above this one.

x + 1/2x = 42 Combine the left side

1.5 x = 42 Divide by 1.5

x = 28