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 twice the total number of stationery in Box V.
- Find the percentage of pencils in Box U.
- What fraction of stationery in Box V is pencils?
- The number of pencils in Box U is 60. Find the number of pencils in Box V.
(a)
90°360° = 25% of stationery in Box U
Percentage of folders in Box U = 25%
Percentage of pencils in Box U
= 100% - 45% - 25%
= 30%
(b)
Percentage of pencils in Box V
= 100% - 40% - 25%
= 35%
Fraction of stationery in Box V that is pencils
= 35100
=
720 (c)
30% of stationery in Box U = 60
1% of stationery in Box U = 60 ÷ 30 = 2
100% of the stationery in Box U = 100 x 2 = 200
Number of stationery in Box V
= 200 ÷ 2
= 100
100% of stationery in Box V = 100
1% of stationery in Box U = 100 ÷ 100 = 1
35% of stationery in Box U = 35 x 1 = 35
Number of pencils in Box V = 35
Answer(s): (a) 30%; (b)
720; (c) 35