PSLE The airmail rates to two countries are shown. Hilda sent a letter weighing 91g to Malaysia and a letter weighing 48g to Egypt by airmail. How much did she pay altogether?
Mass |
Malaysia |
Egypt |
First 50g |
$0.95 |
$1.50 |
Every additional 25g |
$0.65 |
$0.55 |
Mass of the letter to Malaysia excluding the first 50 g
= 91 - 50
= 41 g
Sets of additional 25 g of the letter to Malaysia
= 41 ÷ 25
= 1 r 16
Sets of additional 25 g and part thereof the letter to Malaysia
= 1 + 1
= 2
Amount that Hilda paid for the letter to Malaysia
= 0.95 + 2 x 0.65
= 0.95 + 1.30
= $2.25
Amount that Hilda paid altogether
= 2.25 + 1.50
= $3.75
Answer(s): $3.75