The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 60 g |
65¢ |
95¢ |
Every additional 10 g |
25¢ |
45¢ |
Ahmad paid $5.55 for posting a package overseas. What was the greatest possible mass of the package that Ahmad posted?
$1 = 100¢
$5.55 = 5.55 x 100 = 555¢
Amount that Ahmad paid for the additional sets of 10 g for the overseas package
= 555 - 95
= 460¢
Number of sets of 10 g that Ahmad paid for the overseas package
= 460 ÷ 10
= 46
Mass of 46 sets of 10 g for the overseas package
= 46 x 10
= 460 g
Greatest possible mass of the overseas package
= 60 + 460
= 520 g
Answer(s): 520 g