The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 70 g |
50¢ |
65¢ |
Every additional 10 g |
20¢ |
30¢ |
Elijah paid $5.50 for posting a package locally. What was the greatest possible mass of the package that Elijah posted?
$1 = 100¢
$5.50 = 5.50 x 100 = 550¢
Amount that Elijah paid for the additional sets of 10 g for the local package
= 550 - 50
= 500¢
Number of sets of 10 g that Elijah paid for the local package
= 500 ÷ 10
= 50
Mass of 50 sets of 10 g for the local package
= 50 x 10
= 500 g
Greatest possible mass of the local package
= 70 + 500
= 570 g
Answer(s): 570 g