The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 40 g |
45¢ |
65¢ |
Every additional 10 g |
20¢ |
30¢ |
Reggie paid $4.95 for posting a package overseas. What was the greatest possible mass of the package that Reggie posted?
$1 = 100¢
$4.95 = 4.95 x 100 = 495¢
Amount that Reggie paid for the additional sets of 10 g for the overseas package
= 495 - 65
= 430¢
Number of sets of 10 g that Reggie paid for the overseas package
= 430 ÷ 10
= 43
Mass of 43 sets of 10 g for the overseas package
= 43 x 10
= 430 g
Greatest possible mass of the overseas package
= 40 + 430
= 470 g
Answer(s): 470 g