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 |
$1.20 |
$0.60
|
Every additional 10 g or part thereof |
$0.35 |
How much did Wendy pay for the postage when she sent a letter which weighed 76 g and 2 postcards to Indonesia by airmail?
Remaining mass that Wendy had to pay for the letter as it was more than 40 g
= 76 - 40
= 36 g
Number of sets of additional 10 g of the letter that Wendy had to pay for
= 36 ÷ 10
= 3 r 6
Total number of sets of additional 10 g of the letter that Wendy had to pay for
= 3 + 1
= 4
Amount that Wendy had to pay for the sets of additional 10 g of the letter
= 4 x 0.35
= $1.40
Total amount that Wendy had to pay for the letter
= 1.20 + 1.40
= $2.60
Amount that Wendy had to pay for the 2 postcards
= 2 x 0.60
= $1.20
Total amount that Wendy paid
= 2.60 + 1.20
= $3.80
Answer(s): $3.80