Ahmad spent
25 of his allowance on a lego set. He spent
12 of the remaining allowance on a doll set.
- What fraction of his allowance was left?
- If he had left $15, how much allowance did Ahmad have at first?
(a)
Fraction of allowance left after spending on a lego set
= 1 -
25=
35Fraction of remaining allowance left
= 1 -
12=
12Fraction of his allowance left
=
35 x
12=
310(b)
Amount that Ahmad had at first = 10 u
Amount that Ahmad had left = 3 u
3 u = 15
1 u = 15 ÷ 3 = 5
Total amount that Ahmad had at first
= 10 u
= 10 x 5
= $50
Answer(s): (a)
310; (b) $50