PSLE
The pie charts show the number of each type of stationery in 2 stationery boxes, D and E. The total number of stationery in Box D is twice the total number of stationery in Box E.

1. Find the percentage of markers in Box D.
2. What fraction of stationery in Box E is markers?
3. The number of markers in Box D is 210. Find the number of markers in Box E.

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

Percentage of pens in Box D = 25%

Percentage of markers in Box D
= 100% - 40% - 25%
= 35%

(b)
Percentage of markers in Box E
= 100% - 60% - 15%
= 25%

Fraction of stationery in Box E that is markers
= ¹₄

(c)
35% of stationery in Box D = 210
1% of stationery in Box D = 210 ÷ 35 = 6 
100% of the stationery in Box D = 100 x 6 = 600

Number of stationery in Box E
= 600 ÷ 2
= 300

100% of stationery in Box E = 300
1% of stationery in Box D = 300 ÷ 100 = 3
25% of stationery in Box D = 25 x 3 = 75  

Number of markers in Box E = 75

Answer(s): (a) 35%; (b) ¹₄; (c) 75