PSLE
The pie charts show the number of each type of stationery in 2 stationery boxes, T and U. The total number of stationery in Box T is thrice the total number of stationery in Box U.

1. Find the percentage of highlighters in Box T.
2. What fraction of stationery in Box U is highlighters?
3. The number of highlighters in Box T is 60. Find the number of highlighters in Box U.

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

Percentage of correction tapes in Box T = 25%

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

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

Fraction of stationery in Box U that is highlighters
= ³₁₀

(c)
20% of stationery in Box T = 60
1% of stationery in Box T = 60 ÷ 20 = 3 
100% of the stationery in Box T = 100 x 3 = 300

Number of stationery in Box U
= 300 ÷ 3
= 100

100% of stationery in Box U = 100
1% of stationery in Box T = 100 ÷ 100 = 1
30% of stationery in Box T = 30 x 1 = 30  

Number of highlighters in Box U = 30

Answer(s): (a) 20%; (b) ³₁₀; (c) 30