The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 90 g |
65¢ |
90¢ |
Every additional 10 g |
25¢ |
40¢ |
Pierre paid $2.25 for posting a package locally. What was the greatest possible mass of the package that Pierre posted?
$1 = 100¢
$2.25 = 2.25 x 100 = 225¢
Amount that Pierre paid for the additional sets of 10 g for the local package
= 225 - 65
= 160¢
Number of sets of 10 g that Pierre paid for the local package
= 160 ÷ 10
= 16
Mass of 16 sets of 10 g for the local package
= 16 x 10
= 160 g
Greatest possible mass of the local package
= 90 + 160
= 250 g
Answer(s): 250 g