The table shows the airmail rates for sending letters and postcards to some countries.
Destination |
Letters |
Postcards |
|
Mass |
Postage Rate |
Per piece |
Indonesia, Malaysia
|
1st 40 g |
$1.10 |
$0.40
|
Every additional 10 g or part thereof |
$0.30 |
How much did Fanny pay for the postage when she sent a letter which weighed 88 g and 4 postcards to Indonesia by airmail?
Remaining mass that Fanny had to pay for the letter as it was more than 40 g
= 88 - 40
= 48 g
Number of sets of additional 10 g of the letter that Fanny had to pay for
= 48 ÷ 10
= 4 r 8
Total number of sets of additional 10 g of the letter that Fanny had to pay for
= 4 + 1
= 5
Amount that Fanny had to pay for the sets of additional 10 g of the letter
= 5 x 0.30
= $1.50
Total amount that Fanny had to pay for the letter
= 1.10 + 1.50
= $2.60
Amount that Fanny had to pay for the 4 postcards
= 4 x 0.40
= $1.60
Total amount that Fanny paid
= 2.60 + 1.60
= $4.20
Answer(s): $4.20