PSLEThe pie charts show the number of each type of stationery in 2 stationery boxes, F and G. The total number of stationery in Box F is thrice the total number of stationery in Box G.
- Find the percentage of glues in Box F.
- What fraction of stationery in Box G is glues?
- The number of glues in Box F is 120. Find the number of glues in Box G.
(a)
90°360° = 25% of stationery in Box F
Percentage of files in Box F = 25%
Percentage of glues in Box F
= 100% - 35% - 25%
= 40%
(b)
Percentage of glues in Box G
= 100% - 60% - 15%
= 25%
Fraction of stationery in Box G that is glues
= 25100
=
14 (c)
40% of stationery in Box F = 120
1% of stationery in Box F = 120 ÷ 40 = 3
100% of the stationery in Box F = 100 x 3 = 300
Number of stationery in Box G
= 300 ÷ 3
= 100
100% of stationery in Box G = 100
1% of stationery in Box F = 100 ÷ 100 = 1
25% of stationery in Box F = 25 x 1 = 25
Number of glues in Box G = 25
Answer(s): (a) 40%; (b)
14; (c) 25