PSLEThe pie charts show the number of each type of stationery in 2 stationery boxes, G and H. The total number of stationery in Box G is twice the total number of stationery in Box H.
- Find the percentage of highlighters in Box G.
- What fraction of stationery in Box H is highlighters?
- The number of highlighters in Box G is 160. Find the number of highlighters in Box H.
(a)
90°360° = 25% of stationery in Box G
Percentage of post-it pads in Box G = 25%
Percentage of highlighters in Box G
= 100% - 35% - 25%
= 40%
(b)
Percentage of highlighters in Box H
= 100% - 50% - 20%
= 30%
Fraction of stationery in Box H that is highlighters
= 30100
=
310 (c)
40% of stationery in Box G = 160
1% of stationery in Box G = 160 ÷ 40 = 4
100% of the stationery in Box G = 100 x 4 = 400
Number of stationery in Box H
= 400 ÷ 2
= 200
100% of stationery in Box H = 200
1% of stationery in Box G = 200 ÷ 100 = 2
30% of stationery in Box G = 30 x 2 = 60
Number of highlighters in Box H = 60
Answer(s): (a) 40%; (b)
310; (c) 60