The table shows the charge for water services provided by the utilities board.
Water consumption |
Rate |
70 m3 of water usage and below |
$1.50 per m3 |
Additional water usage above 70 m3 |
$1.90 per m3 |
Linda's family paid $124 for water usage in the month of January. What is the most amount of water that they could have used in January?
Amount that Linda's family paid for the first 70 m
3 of water usage
= 70 x 1.50
= $105
Remaining amount that Linda's family paid for additional water usage
= 124 - 105
= $19
Additional water usage
that Linda's family paid for
= 19 ÷ 1.90
= 10 m
3Most amount of water that Linda's family could have used in January
= 70 + 10
= 80 m
3 Answer(s): 80 m
3