PSLE
The pie charts show the number of each type of stationery in 2 stationery boxes, G and H. The total number of stationery in Box G is four times the total number of stationery in Box H.

1. Find the percentage of highlighters in Box G.
2. What fraction of stationery in Box H is highlighters?
3. The number of highlighters in Box G is 160. Find the number of highlighters in Box H.

(a)
^90°_360° = 25% of stationery in Box G

Percentage of foolscaps in Box G = 25%

Percentage of highlighters in Box G
= 100% - 55% - 25%
= 20%

(b)
Percentage of highlighters in Box H
= 100% - 55% - 30%
= 15%

Fraction of stationery in Box H that is highlighters
= ³₂₀

(c)
20% of stationery in Box G = 160
1% of stationery in Box G = 160 ÷ 20 = 8 
100% of the stationery in Box G = 100 x 8 = 800

Number of stationery in Box H
= 800 ÷ 4
= 200

100% of stationery in Box H = 200
1% of stationery in Box G = 200 ÷ 100 = 2
15% of stationery in Box G = 15 x 2 = 30  

Number of highlighters in Box H = 30

Answer(s): (a) 20%; (b) ³₂₀; (c) 30