PSLE The airmail rates to two countries are shown. Hilda sent a letter weighing 108g to Malaysia and a letter weighing 48g to Egypt by airmail. How much did she pay altogether?
Mass |
Malaysia |
Egypt |
First 50g |
$0.65 |
$1.40 |
Every additional 25g |
$0.25 |
$0.40 |
Mass of the letter to Malaysia excluding the first 50 g
= 108 - 50
= 58 g
Sets of additional 25 g of the letter to Malaysia
= 58 ÷ 25
= 2 r 8
Sets of additional 25 g and part thereof the letter to Malaysia
= 2 + 1
= 3
Amount that Hilda paid for the letter to Malaysia
= 0.65 + 3 x 0.25
= 0.65 + 0.75
= $1.40
Amount that Hilda paid altogether
= 1.40 + 1.40
= $2.80
Answer(s): $2.80