Araba spent 2/3 of her pocket money on transportation,1/5 on photocopies and the reaming 18 Ghana ceded on food.How much did she spend on photocopies?

Answer 1

2/3 x + 1/5 x + 18 = x
multiply by 15 to get
10x + 3x + 270 = 15x
Now finish it off

Answer 2

After spending 2/5 of her pocket money on transportation and 1/5 on cosmetics I was left with 6.15 how much money did she have originally