PSLE The airmail rates to two countries are shown. Erika sent a letter weighing 94g to Indonesia and a letter weighing 40g to France by airmail. How much did she pay altogether?
Mass |
Indonesia |
France |
First 50g |
$0.95 |
$1.60 |
Every additional 25g |
$0.65 |
$0.50 |
Mass of the letter to Indonesia excluding the first 50 g
= 94 - 50
= 44 g
Sets of additional 25 g of the letter to Indonesia
= 44 ÷ 25
= 1 r 19
Sets of additional 25 g and part thereof the letter to Indonesia
= 1 + 1
= 2
Amount that Erika paid for the letter to Indonesia
= 0.95 + 2 x 0.65
= 0.95 + 1.30
= $2.25
Amount that Erika paid altogether
= 2.25 + 1.60
= $3.85
Answer(s): $3.85