PSLE The table shows the charges for laser gun rental. Riordan rented a laser gun from 11.39 a.m. to 3.21 p.m.. How much did he pay?
Laser Gun rental |
Charges |
First hour |
$5 |
Additional 12 hour or part thereof |
$1.20 |
From 11.39 a.m. to 12.39 p.m. = 1 h
From 12.39 p.m. to 3.21 p.m. = 2 h 42 min = 162 min
Sets of additional
12 hour
= 162 ÷ 30
= 5 r 12
Total number of sets of additional
12 hour and part thereof to pay for
= 5 + 1
= 6
Amount to pay from 11.39 a.m. to 12.39 a.m. = $5
Amount to pay from 12.39 a.m. to 3.21 p.m. = 6 x 1.20 = $7.20
Total amount that Riordan paid
= 5 + 7.20
= $12.20
Answer(s): $12.20