The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 70 g |
45¢ |
90¢ |
Every additional 10 g |
20¢ |
40¢ |
Vaidev paid $5.25 for posting a package locally. What was the greatest possible mass of the package that Vaidev posted?
$1 = 100¢
$5.25 = 5.25 x 100 = 525¢
Amount that Vaidev paid for the additional sets of 10 g for the local package
= 525 - 45
= 480¢
Number of sets of 10 g that Vaidev paid for the local package
= 480 ÷ 10
= 48
Mass of 48 sets of 10 g for the local package
= 48 x 10
= 480 g
Greatest possible mass of the local package
= 70 + 480
= 550 g
Answer(s): 550 g