The table shows how much a shop charges a customer for renting a pair of rollerblades.
Time |
Charges |
First hour |
$7.50 |
Every additional 12 hour |
$2.50 |
Rachel paid $20 for renting a pair of rollerblades starting from 14 00. What would be the latest time she must return the pair of rollerblades to the shop?
Amount that Rachel paid for all the additional
12 hours
= 20 - 7.50
= $12.50
Number of sets of additional
12 hours
= 12.50 ÷ 2.50
= 5
Total additional time that Rachel paid for
= 5 x
12= 2
12 h
Total time that Rachel paid for
= 1 + 2
12= 3
12 h
3
12 h after 14 00 = 17 30
Latest time that Rachel must return the pair of rollerblades to the shop: 17 30
Answer(s): 17 30