The table shows the charge for water services provided by the utilities board.
Water consumption |
Rate |
70 m3 of water usage and below |
$1.60 per m3 |
Additional water usage above 70 m3 |
$1.80 per m3 |
Victoria's family paid $121 for water usage in the month of November. What is the most amount of water that they could have used in November?
Amount that Victoria's family paid for the first 70 m
3 of water usage
= 70 x 1.60
= $112
Remaining amount that Victoria's family paid for additional water usage
= 121 - 112
= $9
Additional water usage
that Victoria's family paid for
= 9 ÷ 1.80
= 5 m
3Most amount of water that Victoria's family could have used in November
= 70 + 5
= 75 m
3 Answer(s): 75 m
3