The table shows the charge for water services provided by the utilities board.
Water consumption |
Rate |
90 m3 of water usage and below |
$1.10 per m3 |
Additional water usage above 90 m3 |
$1.50 per m3 |
Penelope's family paid $108 for water usage in the month of August. What is the most amount of water that they could have used in August?
Amount that Penelope's family paid for the first 90 m
3 of water usage
= 90 x 1.10
= $99
Remaining amount that Penelope's family paid for additional water usage
= 108 - 99
= $9
Additional water usage
that Penelope's family paid for
= 9 ÷ 1.50
= 6 m
3Most amount of water that Penelope's family could have used in August
= 90 + 6
= 96 m
3 Answer(s): 96 m
3