Question

In five years time thabo will be three times as old as he was nine years ago.how old is he now

Answer 1

x = present age


In five years time thabo will be three times as old as he was nine years ago, mean:


5 + x = 3 ( x - 9 )

5 + x = 3 x - 27 Subtract x to both sides

5 + x - x = 3 x - 27 - x

5 = 2 x - 27 Add 27 to both sides

5 + 27 = 2 x - 27 + 27

32 = 2 x Divide both sides by 2

32 / 2 = x

16 = x

x = 16 yrs