PSLEThe pie charts show the number of each type of stationery in 2 stationery boxes, W and X. The total number of stationery in Box W is twice the total number of stationery in Box X.
- Find the percentage of correction tapes in Box W.
- What fraction of stationery in Box X is correction tapes?
- The number of correction tapes in Box W is 280. Find the number of correction tapes in Box X.
(a)
90°360° = 25% of stationery in Box W
Percentage of markers in Box W = 25%
Percentage of correction tapes in Box W
= 100% - 40% - 25%
= 35%
(b)
Percentage of correction tapes in Box X
= 100% - 50% - 20%
= 30%
Fraction of stationery in Box X that is correction tapes
= 30100
=
310 (c)
35% of stationery in Box W = 280
1% of stationery in Box W = 280 ÷ 35 = 8
100% of the stationery in Box W = 100 x 8 = 800
Number of stationery in Box X
= 800 ÷ 2
= 400
100% of stationery in Box X = 400
1% of stationery in Box W = 400 ÷ 100 = 4
30% of stationery in Box W = 30 x 4 = 120
Number of correction tapes in Box X = 120
Answer(s): (a) 35%; (b)
310; (c) 120