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

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

From the bar graph,
Number of participants who chose brown = Number of participants who chose gold = 60 

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

Total number of participants = 240

Number of participants who chose yellow coats
= 240 - 60 - 60 - 34
= 86

Answer(s): 86