PSLE
School camp blazers were available in 4 colours: yellow, blue, silver and white. At the camp, each kids chose one blazer. The pie chart represents the kids' choice of blazer colours. 44 kids chose white blazers. The kids' choice of blazer colours is also represented by the bar graph. The bar that shows the number of kids who chose yellow blazers has not been drawn. How many kids chose yellow blazers?

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

From the bar graph,
Number of kids who chose silver = Number of kids who chose blue = 44 

¹₄ of the pie chart = 44
⁴₄ of the pie chart = 4 x 44 = 176

Total number of kids = 176

Number of kids who chose yellow blazers
= 176 - 44 - 44 - 44
= 44

Answer(s): 44