The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 90 g |
55¢ |
70¢ |
Every additional 10 g |
20¢ |
30¢ |
Bryan paid $3.40 for posting a package overseas. What was the greatest possible mass of the package that Bryan posted?
$1 = 100¢
$3.40 = 3.40 x 100 = 340¢
Amount that Bryan paid for the additional sets of 10 g for the overseas package
= 340 - 70
= 270¢
Number of sets of 10 g that Bryan paid for the overseas package
= 270 ÷ 10
= 27
Mass of 27 sets of 10 g for the overseas package
= 27 x 10
= 270 g
Greatest possible mass of the overseas package
= 90 + 270
= 360 g
Answer(s): 360 g