The table shows how much a shop charges a customer for renting a pair of rollerblades.
Time |
Charges |
First hour |
$4.50 |
Every additional 12 hour |
$1.50 |
Diana paid $7.50 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 Diana paid for all the additional
12 hours
= 7.50 - 4.50
= $3
Number of sets of additional
12 hours
= 3 ÷ 1.50
= 2
Total additional time that Diana paid for
= 2 x
12= 1 h
Total time that Diana paid for
= 1 + 1
= 2 h
2 h after 16 00 = 18 00
Latest time that Diana must return the pair of rollerblades to the shop: 18 00
Answer(s): 18 00