PSLEThe pie charts show the number of each type of stationery in 2 stationery boxes, U and V. The total number of stationery in Box U is four times the total number of stationery in Box V.
- Find the percentage of foolscaps in Box U.
- What fraction of stationery in Box V is foolscaps?
- The number of foolscaps in Box U is 320. Find the number of foolscaps in Box V.
(a)
90°360° = 25% of stationery in Box U
Percentage of staplers in Box U = 25%
Percentage of foolscaps in Box U
= 100% - 35% - 25%
= 40%
(b)
Percentage of foolscaps in Box V
= 100% - 60% - 20%
= 20%
Fraction of stationery in Box V that is foolscaps
= 20100
=
15 (c)
40% of stationery in Box U = 320
1% of stationery in Box U = 320 ÷ 40 = 8
100% of the stationery in Box U = 100 x 8 = 800
Number of stationery in Box V
= 800 ÷ 4
= 200
100% of stationery in Box V = 200
1% of stationery in Box U = 200 ÷ 100 = 2
20% of stationery in Box U = 20 x 2 = 40
Number of foolscaps in Box V = 40
Answer(s): (a) 40%; (b)
15; (c) 40