The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 60 g |
45¢ |
95¢ |
Every additional 10 g |
20¢ |
40¢ |
Seth paid $1.65 for posting a package locally. What was the greatest possible mass of the package that Seth posted?
$1 = 100¢
$1.65 = 1.65 x 100 = 165¢
Amount that Seth paid for the additional sets of 10 g for the local package
= 165 - 45
= 120¢
Number of sets of 10 g that Seth paid for the local package
= 120 ÷ 10
= 12
Mass of 12 sets of 10 g for the local package
= 12 x 10
= 120 g
Greatest possible mass of the local package
= 60 + 120
= 180 g
Answer(s): 180 g