Question 941552
Fatima is 15years old. Bernice is one-third older. How many years ago was Bernice twice as old as Fatima? ( answer is 10years - show your solution )
let x=number of years ago Bernice was twice as old as Fatima.
Fatima=15
Bernice=15+5=20
(20-x)/(15-x)=2
2(15-x)=20+x
30-2x=20-x
x=10