Nick had $53.80 less than Erika. He spent
78 of his money on a pencil which cost $15.40. Erika spent
37 of her money on a sweater. How much had Erika left?
| |
Nick |
Erika |
| Before |
8 u |
7 p |
| Change |
- 7 u |
- 3 p |
| After |
1 u |
4 p |
Amount that Nick spent on the pencil = 7 u
7 u = 15.40
1 u = 15.40 ÷ 7 = 2.20
Amount that Nick had at first
= 8 u
= 8 x 2.20
= $17.60
Amount that Erika had at first
= 17.60 + 53.80
= $71.40
Fraction of money that Erika had left
= 1 -
37 =
47 Amount that Erika had at first = 7 p
7 p = 71.40
1 p = 71.40 ÷ 7 = 10.20
Amount that Erika had left
= 4 p
= 4 x 10.20
= $40.80
Answer(s): $40.80
