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

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

From the bar graph,
Number of kids who chose white = Number of kids who chose brown = 48 

¹₄ of the pie chart = 48
⁴₄ of the pie chart = 4 x 48 = 192

Total number of kids = 192

Number of kids who chose grey jackets
= 192 - 48 - 48 - 32
= 64

Answer(s): 64