The table shows the charge for water services provided by the utilities board.
Water consumption |
Rate |
20 m3 of water usage and below |
$1.20 per m3 |
Additional water usage above 20 m3 |
$1.60 per m3 |
Tammy's family paid $32 for water usage in the month of May. What is the most amount of water that they could have used in May?
Amount that Tammy's family paid for the first 20 m
3 of water usage
= 20 x 1.20
= $24
Remaining amount that Tammy's family paid for additional water usage
= 32 - 24
= $8
Additional water usage
that Tammy's family paid for
= 8 ÷ 1.60
= 5 m
3Most amount of water that Tammy's family could have used in May
= 20 + 5
= 25 m
3 Answer(s): 25 m
3