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 post-it pads in Box G.
- What fraction of stationery in Box H is post-it pads?
- The number of post-it pads in Box G is 320. Find the number of post-it pads in Box H.
(a)
90°360° = 25% of stationery in Box G
Percentage of files in Box G = 25%
Percentage of post-it pads in Box G
= 100% - 35% - 25%
= 40%
(b)
Percentage of post-it pads in Box H
= 100% - 60% - 25%
= 15%
Fraction of stationery in Box H that is post-it pads
= 15100
=
320 (c)
40% of stationery in Box G = 320
1% of stationery in Box G = 320 ÷ 40 = 8
100% of the stationery in Box G = 100 x 8 = 800
Number of stationery in Box H
= 800 ÷ 2
= 400
100% of stationery in Box H = 400
1% of stationery in Box G = 400 ÷ 100 = 4
15% of stationery in Box G = 15 x 4 = 60
Number of post-it pads in Box H = 60
Answer(s): (a) 40%; (b)
320; (c) 60