The table shows the postage rates for posting mail locally and overseas.
Mass |
Local Postage |
Overseas Postage |
First 40 g |
65¢ |
75¢ |
Every additional 10 g |
25¢ |
30¢ |
Asher paid $4.25 for posting a package overseas. What was the greatest possible mass of the package that Asher posted?
$1 = 100¢
$4.25 = 4.25 x 100 = 425¢
Amount that Asher paid for the additional sets of 10 g for the overseas package
= 425 - 75
= 350¢
Number of sets of 10 g that Asher 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
= 40 + 350
= 390 g
Answer(s): 390 g