The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 70 g |
65¢ |
95¢ |
Every additional 10 g |
25¢ |
45¢ |
Ahmad paid $5.35 for posting a package overseas. What was the greatest possible mass of the package that Ahmad posted?
$1 = 100¢
$5.35 = 5.35 x 100 = 535¢
Amount that Ahmad paid for the additional sets of 10 g for the overseas package
= 535 - 95
= 440¢
Number of sets of 10 g that Ahmad paid for the overseas package
= 440 ÷ 10
= 44
Mass of 44 sets of 10 g for the overseas package
= 44 x 10
= 440 g
Greatest possible mass of the overseas package
= 70 + 440
= 510 g
Answer(s): 510 g