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

1. Find the percentage of punchers in Box H.
2. What fraction of stationery in Box J is punchers?
3. The number of punchers in Box H is 200. Find the number of punchers in Box J.

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

Percentage of notebooks in Box H = 25%

Percentage of punchers in Box H
= 100% - 55% - 25%
= 20%

(b)
Percentage of punchers in Box J
= 100% - 35% - 30%
= 35%

Fraction of stationery in Box J that is punchers
= ⁷₂₀

(c)
20% of stationery in Box H = 200
1% of stationery in Box H = 200 ÷ 20 = 10 
100% of the stationery in Box H = 100 x 10 = 1000

Number of stationery in Box J
= 1000 ÷ 5
= 200

100% of stationery in Box J = 200
1% of stationery in Box H = 200 ÷ 100 = 2
35% of stationery in Box H = 35 x 2 = 70  

Number of punchers in Box J = 70

Answer(s): (a) 20%; (b) ⁷₂₀; (c) 70