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

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

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

Percentage of pencils in Box F = 25%

Percentage of glues in Box F
= 100% - 35% - 25%
= 40%

(b)
Percentage of glues in Box G
= 100% - 70% - 20%
= 10%

Fraction of stationery in Box G that is glues
= ¹₁₀

(c)
40% of stationery in Box F = 160
1% of stationery in Box F = 160 ÷ 40 = 4 
100% of the stationery in Box F = 100 x 4 = 400

Number of stationery in Box G
= 400 ÷ 4
= 100

100% of stationery in Box G = 100
1% of stationery in Box F = 100 ÷ 100 = 1
10% of stationery in Box F = 10 x 1 = 10  

Number of glues in Box G = 10

Answer(s): (a) 40%; (b) ¹₁₀; (c) 10