PSLE A group of boys were asked to choose their favourite sport from aerobics, badminton and gymnastics. The pie chart represents the boys' choices. One-tenth of the group chose gymnastics.
- What percentage of the group chose aerobics?
- The boys' choices were also represented by a bar graph. Part of the graph is not shown. How many boys chose badminton?
(a)
Percent of the group that chose gymnasticsl
= One-tenth of the pie chart
=
110 x 100%
= 10%
Percent of the group that chose badminton = 45%
Percent of the group that chose aerobics
= 100% - 10% - 45%
= 45%
(b)
10% of the group = 2
1% of the group =
210 Percent of the group that chose badminton
= 45% of the group
= 45 x
210 = 9
Answer(s): (a) 45%; (b) 9