PSLEThe pie charts show the number of each type of stationery in 2 stationery boxes, X and Y. The total number of stationery in Box X is twice the total number of stationery in Box Y.
- Find the percentage of staplers in Box X.
- What fraction of stationery in Box Y is staplers?
- The number of staplers in Box X is 400. Find the number of staplers in Box Y.
(a)
90°360° = 25% of stationery in Box X
Percentage of glues in Box X = 25%
Percentage of staplers in Box X
= 100% - 35% - 25%
= 40%
(b)
Percentage of staplers in Box Y
= 100% - 50% - 20%
= 30%
Fraction of stationery in Box Y that is staplers
= 30100
=
310 (c)
40% of stationery in Box X = 400
1% of stationery in Box X = 400 ÷ 40 = 10
100% of the stationery in Box X = 100 x 10 = 1000
Number of stationery in Box Y
= 1000 ÷ 2
= 500
100% of stationery in Box Y = 500
1% of stationery in Box X = 500 ÷ 100 = 5
30% of stationery in Box X = 30 x 5 = 150
Number of staplers in Box Y = 150
Answer(s): (a) 40%; (b)
310; (c) 150