PSLE The airmail rates to two countries are shown. Tina sent a letter weighing 94g to Indonesia and a letter weighing 43g to China by airmail. How much did she pay altogether?
Mass |
Indonesia |
China |
First 50g |
$0.65 |
$1.80 |
Every additional 25g |
$0.25 |
$0.80 |
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 Tina paid for the letter to Indonesia
= 0.65 + 2 x 0.25
= 0.65 + 0.50
= $1.15
Amount that Tina paid altogether
= 1.15 + 1.80
= $2.95
Answer(s): $2.95