Question 576787
charels is twice as old as william.Four years ago Charles was 3 times as old as 
william.How old is each now?
sol:
let william's age = x
charle's age = 2x ,as given
forming the equation with the data they gave,
2x - 4 = 3(x - 4)
solve for x you will get william's = 8 years
charle's = 16 years