The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 50 g |
60¢ |
85¢ |
Every additional 10 g |
25¢ |
35¢ |
Sean paid $4.35 for posting a package overseas. What was the greatest possible mass of the package that Sean posted?
$1 = 100¢
$4.35 = 4.35 x 100 = 435¢
Amount that Sean paid for the additional sets of 10 g for the overseas package
= 435 - 85
= 350¢
Number of sets of 10 g that Sean paid for the overseas package
= 350 ÷ 10
= 35
Mass of 35 sets of 10 g for the overseas package
= 35 x 10
= 350 g
Greatest possible mass of the overseas package
= 50 + 350
= 400 g
Answer(s): 400 g