PSLE The airmail rates to two countries are shown. Lynn sent a letter weighing 96g to Phillippines and a letter weighing 44g to India by airmail. How much did she pay altogether?
Mass |
Phillippines |
India |
First 50g |
$0.65 |
$1.30 |
Every additional 25g |
$0.35 |
$0.45 |
Mass of the letter to Phillippines excluding the first 50 g
= 96 - 50
= 46 g
Sets of additional 25 g of the letter to Phillippines
= 46 ÷ 25
= 1 r 21
Sets of additional 25 g and part thereof the letter to Phillippines
= 1 + 1
= 2
Amount that Lynn paid for the letter to Phillippines
= 0.65 + 2 x 0.35
= 0.65 + 0.70
= $1.35
Amount that Lynn paid altogether
= 1.35 + 1.30
= $2.65
Answer(s): $2.65