Question

Izzy is now twice as old as Belle. Seven years ago, the sum of their ages is 16. How old are they now?

Answer 1

Step-by-step explanation:

Let Izzy's and Belle's old be x and y.

According to first condition.

x=2y...(1)

According to second confition.

(x-7)+(y-7)=16

x+y-14=16

x+y=16+14

x+y=30...(2)

Substituting eq(1) in eq(2)

2y+y=30

3y=30

y=30/3

y=10

Substituting y=10 in equation (1)

x=2(10)

x=20

The age of Izzy is 20 years and of Belle is 10 years.