The table shows how much a shop charges a customer for renting a surfboard.
Time |
Charges |
First hour |
$7.50 |
Every additional 12 hour |
$3.50 |
Barbara paid $21.50 for renting a surfboard starting from 14 00. What would be the latest time she must return the surfboard to the shop?
Amount that Barbara paid for all the additional
12 hours
= 21.50 - 7.50
= $14
Number of sets of additional
12 hours
= 14 ÷ 3.50
= 4
Total additional time that Barbara paid for
= 4 x
12= 2 h
Total time that Barbara paid for
= 1 + 2
= 3 h
3 h after 14 00 = 17 00
Latest time that Barbara must return the surfboard to the shop: 17 00
Answer(s): 17 00