PSLEThe pie charts show the number of each type of stationery in 2 stationery boxes, V and W. The total number of stationery in Box V is twice the total number of stationery in Box W.
- Find the percentage of pens in Box V.
- What fraction of stationery in Box W is pens?
- The number of pens in Box V is 40. Find the number of pens in Box W.
(a)
90°360° = 25% of stationery in Box V
Percentage of folders in Box V = 25%
Percentage of pens in Box V
= 100% - 55% - 25%
= 20%
(b)
Percentage of pens in Box W
= 100% - 35% - 30%
= 35%
Fraction of stationery in Box W that is pens
= 35100
=
720 (c)
20% of stationery in Box V = 40
1% of stationery in Box V = 40 ÷ 20 = 2
100% of the stationery in Box V = 100 x 2 = 200
Number of stationery in Box W
= 200 ÷ 2
= 100
100% of stationery in Box W = 100
1% of stationery in Box V = 100 ÷ 100 = 1
35% of stationery in Box V = 35 x 1 = 35
Number of pens in Box W = 35
Answer(s): (a) 20%; (b)
720; (c) 35