PSLEThe pie charts show the number of each type of stationery in 2 stationery boxes, L and M. The total number of stationery in Box L is thrice the total number of stationery in Box M.
- Find the percentage of correction tapes in Box L.
- What fraction of stationery in Box M is correction tapes?
- The number of correction tapes in Box L is 105. Find the number of correction tapes in Box M.
(a)
90°360° = 25% of stationery in Box L
Percentage of rulers in Box L = 25%
Percentage of correction tapes in Box L
= 100% - 40% - 25%
= 35%
(b)
Percentage of correction tapes in Box M
= 100% - 60% - 15%
= 25%
Fraction of stationery in Box M that is correction tapes
= 25100
=
14 (c)
35% of stationery in Box L = 105
1% of stationery in Box L = 105 ÷ 35 = 3
100% of the stationery in Box L = 100 x 3 = 300
Number of stationery in Box M
= 300 ÷ 3
= 100
100% of stationery in Box M = 100
1% of stationery in Box L = 100 ÷ 100 = 1
25% of stationery in Box L = 25 x 1 = 25
Number of correction tapes in Box M = 25
Answer(s): (a) 35%; (b)
14; (c) 25