The table shows how much a shop charges a customer for renting a pair of rollerblades.
Time |
Charges |
First hour |
$10.50 |
Every additional 12 hour |
$4.50 |
Mary paid $33 for renting a pair of rollerblades starting from 16 00. What would be the latest time she must return the pair of rollerblades to the shop?
Amount that Mary paid for all the additional
12 hours
= 33 - 10.50
= $22.50
Number of sets of additional
12 hours
= 22.50 ÷ 4.50
= 5
Total additional time that Mary paid for
= 5 x
12= 2
12 h
Total time that Mary paid for
= 1 + 2
12= 3
12 h
3
12 h after 16 00 = 19 30
Latest time that Mary must return the pair of rollerblades to the shop: 19 30
Answer(s): 19 30