PSLEThe pie charts show the number of each type of stationery in 2 stationery boxes, T and U. The total number of stationery in Box T is thrice the total number of stationery in Box U.
- Find the percentage of notebooks in Box T.
- What fraction of stationery in Box U is notebooks?
- The number of notebooks in Box T is 210. Find the number of notebooks in Box U.
(a)
90°360° = 25% of stationery in Box T
Percentage of staplers in Box T = 25%
Percentage of notebooks in Box T
= 100% - 40% - 25%
= 35%
(b)
Percentage of notebooks in Box U
= 100% - 50% - 25%
= 25%
Fraction of stationery in Box U that is notebooks
= 25100
=
14 (c)
35% of stationery in Box T = 210
1% of stationery in Box T = 210 ÷ 35 = 6
100% of the stationery in Box T = 100 x 6 = 600
Number of stationery in Box U
= 600 ÷ 3
= 200
100% of stationery in Box U = 200
1% of stationery in Box T = 200 ÷ 100 = 2
25% of stationery in Box T = 25 x 2 = 50
Number of notebooks in Box U = 50
Answer(s): (a) 35%; (b)
14; (c) 50