PSLE The airmail rates to two countries are shown. Winnie sent a letter weighing 76g to Malaysia and a letter weighing 26g to India by airmail. How much did she pay altogether?
Mass |
Malaysia |
India |
First 30g |
$0.95 |
$1.80 |
Every additional 15g |
$0.75 |
$0.60 |
Mass of the letter to Malaysia excluding the first 30 g
= 76 - 30
= 46 g
Sets of additional 15 g of the letter to Malaysia
= 46 ÷ 15
= 3 r 1
Sets of additional 15 g and part thereof the letter to Malaysia
= 3 + 1
= 4
Amount that Winnie paid for the letter to Malaysia
= 0.95 + 4 x 0.75
= 0.95 + 3.00
= $3.95
Amount that Winnie paid altogether
= 3.95 + 1.80
= $5.75
Answer(s): $5.75