PSLE
School camp shirts were available in 4 colours: brown, grey, red and pink. At the camp, each kids chose one shirt. The pie chart represents the kids' choice of shirt colours. 32 kids chose pink shirts. The kids' choice of shirt colours is also represented by the bar graph. The bar that shows the number of kids who chose brown shirts has not been drawn. How many kids chose brown shirts?

    
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 shirts
= 240 - 60 - 60 - 32
= 88

Answer(s): 88