The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 70 g |
35¢ |
60¢ |
Every additional 10 g |
15¢ |
20¢ |
Tommy paid $4.65 for posting a package locally. What was the greatest possible mass of the package that Tommy posted?
$1 = 100¢
$4.65 = 4.65 x 100 = 465¢
Amount that Tommy paid for the additional sets of 10 g for the local package
= 465 - 35
= 430¢
Number of sets of 10 g that Tommy paid for the local package
= 430 ÷ 10
= 43
Mass of 43 sets of 10 g for the local package
= 43 x 10
= 430 g
Greatest possible mass of the local package
= 70 + 430
= 500 g
Answer(s): 500 g