The table shows how much a shop charges a customer for renting a surfboard.
Time |
Charges |
First hour |
$11.50 |
Every additional 12 hour |
$4.50 |
Opal paid $20.50 for renting a surfboard starting from 14 00. What would be the latest time she must return the surfboard to the shop?
Amount that Opal paid for all the additional
12 hours
= 20.50 - 11.50
= $9
Number of sets of additional
12 hours
= 9 ÷ 4.50
= 2
Total additional time that Opal paid for
= 2 x
12= 1 h
Total time that Opal paid for
= 1 + 1
= 2 h
2 h after 14 00 = 16 00
Latest time that Opal must return the surfboard to the shop: 16 00
Answer(s): 16 00