The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 50 g |
50¢ |
70¢ |
Every additional 10 g |
20¢ |
25¢ |
Howard paid $3.10 for posting a package locally. What was the greatest possible mass of the package that Howard posted?
$1 = 100¢
$3.10 = 3.10 x 100 = 310¢
Amount that Howard paid for the additional sets of 10 g for the local package
= 310 - 50
= 260¢
Number of sets of 10 g that Howard paid for the local package
= 260 ÷ 10
= 26
Mass of 26 sets of 10 g for the local package
= 26 x 10
= 260 g
Greatest possible mass of the local package
= 50 + 260
= 310 g
Answer(s): 310 g