The table shows the charge for water services provided by the utilities board.
Water consumption |
Rate |
30 m3 of water usage and below |
$1.60 per m3 |
Additional water usage above 30 m3 |
$1.70 per m3 |
Cindy's family paid $65 for water usage in the month of October. What is the most amount of water that they could have used in October?
Amount that Cindy's family paid for the first 30 m
3 of water usage
= 30 x 1.60
= $48
Remaining amount that Cindy's family paid for additional water usage
= 65 - 48
= $17
Additional water usage
that Cindy's family paid for
= 17 ÷ 1.70
= 10 m
3Most amount of water that Cindy's family could have used in October
= 30 + 10
= 40 m
3 Answer(s): 40 m
3