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

1. Find the percentage of correction tapes in Box U.
2. What fraction of stationery in Box V is correction tapes?
3. The number of correction tapes in Box U is 80. Find the number of correction tapes in Box V.

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

Percentage of notebooks in Box U = 25%

Percentage of correction tapes in Box U
= 100% - 55% - 25%
= 20%

(b)
Percentage of correction tapes in Box V
= 100% - 60% - 25%
= 15%

Fraction of stationery in Box V that is correction tapes
= ³₂₀

(c)
20% of stationery in Box U = 80
1% of stationery in Box U = 80 ÷ 20 = 4 
100% of the stationery in Box U = 100 x 4 = 400

Number of stationery in Box V
= 400 ÷ 2
= 200

100% of stationery in Box V = 200
1% of stationery in Box U = 200 ÷ 100 = 2
15% of stationery in Box U = 15 x 2 = 30  

Number of correction tapes in Box V = 30

Answer(s): (a) 20%; (b) ³₂₀; (c) 30