Ama is four times as old as Akua. In ten years time Ama will be twice as old as Akua. Find the age of Akua.
20 is not 4 times 2.
If Akua's age is x, then
4x+10 = 2(x+10)
x = 5
check:
So they are now 5 and 20
In 10 years, they will be 15 and 30
If Akua's age is x, then
4x+10 = 2(x+10)
x = 5
check:
So they are now 5 and 20
In 10 years, they will be 15 and 30