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 five times the total number of stationery in Box G.

1. Find the percentage of markers in Box F.
2. What fraction of stationery in Box G is markers?
3. The number of markers in Box F is 225. Find the number of markers in Box G.

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

Percentage of pens in Box F = 25%

Percentage of markers in Box F
= 100% - 30% - 25%
= 45%

(b)
Percentage of markers in Box G
= 100% - 55% - 20%
= 25%

Fraction of stationery in Box G that is markers
= ¹₄

(c)
45% of stationery in Box F = 225
1% of stationery in Box F = 225 ÷ 45 = 5 
100% of the stationery in Box F = 100 x 5 = 500

Number of stationery in Box G
= 500 ÷ 5
= 100

100% of stationery in Box G = 100
1% of stationery in Box F = 100 ÷ 100 = 1
25% of stationery in Box F = 25 x 1 = 25  

Number of markers in Box G = 25

Answer(s): (a) 45%; (b) ¹₄; (c) 25