The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 90 g |
65¢ |
95¢ |
Every additional 10 g |
25¢ |
45¢ |
Fred paid $3.25 for posting a package locally. What was the greatest possible mass of the package that Fred posted?
$1 = 100¢
$3.25 = 3.25 x 100 = 325¢
Amount that Fred paid for the additional sets of 10 g for the local package
= 325 - 65
= 260¢
Number of sets of 10 g that Fred 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
= 90 + 260
= 350 g
Answer(s): 350 g