Question

9 years Hence a girl will be three times as old as she was 9 years ago how old she is now ?

Answer 1

let the present age be x
then

$3(x - 9) = x + 9 \\ 3x - 27 = x + 9 \\ 3x - 9 = 27 + 9 \\ 2x = 27 + 9 \\ 2x = 36 \\ x = 36 \div 2 \\ x = 18 \\ before \: age = 18 \\ now age \: = 3(18 - 9) \\ 3 \times 9 = 27answer$

Answer 2

Answer:

hope it helps you.....