The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 70 g |
45¢ |
65¢ |
Every additional 10 g |
20¢ |
25¢ |
Gabriel paid $3.95 for posting a package overseas. What was the greatest possible mass of the package that Gabriel posted?
$1 = 100¢
$3.95 = 3.95 x 100 = 395¢
Amount that Gabriel paid for the additional sets of 10 g for the overseas package
= 395 - 65
= 330¢
Number of sets of 10 g that Gabriel paid for the overseas package
= 330 ÷ 10
= 33
Mass of 33 sets of 10 g for the overseas package
= 33 x 10
= 330 g
Greatest possible mass of the overseas package
= 70 + 330
= 400 g
Answer(s): 400 g