PSLE
School camp coats were available in 4 colours: brown, grey, red and silver. At the camp, each kids chose one coat. The pie chart represents the kids' choice of coat colours. 34 kids chose silver coats. The kids' choice of coat colours is also represented by the bar graph. The bar that shows the number of kids who chose brown coats has not been drawn. How many kids chose brown coats?

    
From the pie graph,
fraction of kids who chose red or grey
= ^90°_360°
= ¹₄

From the bar graph,
Number of kids who chose red = Number of kids who chose grey = 60 

¹₄ of the pie chart = 60
⁴₄ of the pie chart = 4 x 60 = 240

Total number of kids = 240

Number of kids who chose brown coats
= 240 - 60 - 60 - 34
= 86

Answer(s): 86