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 180. Find the number of correction tapes in Box X.
(a)
90°360° = 25% of stationery in Box W
Percentage of glues in Box W = 25%
Percentage of correction tapes in Box W
= 100% - 30% - 25%
= 45%
(b)
Percentage of correction tapes in Box X
= 100% - 65% - 25%
= 10%
Fraction of stationery in Box X that is correction tapes
= 10100
=
110 (c)
45% of stationery in Box W = 180
1% of stationery in Box W = 180 ÷ 45 = 4
100% of the stationery in Box W = 100 x 4 = 400
Number of stationery in Box X
= 400 ÷ 2
= 200
100% of stationery in Box X = 200
1% of stationery in Box W = 200 ÷ 100 = 2
10% of stationery in Box W = 10 x 2 = 20
Number of correction tapes in Box X = 20
Answer(s): (a) 45%; (b)
110; (c) 20