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

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

From the bar graph,
Number of students who chose silver = Number of students who chose gold = 60 

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

Total number of students = 240

Number of students who chose brown jackets
= 240 - 60 - 60 - 44
= 76

Answer(s): 76