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JAMB Mathematics 2020 Paper

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Question : 13

Total: 40

In preparing rice cutlets, a cook used 75g of rice, 40g of margarine, 105g of meat and 20g of bread crumbs. Find the angle of the sector which represent meat in a pie chart?

30 $^{\circ}$
60 $^{\circ}$
112.5 $^{\circ}$
157.5 $^{\circ}$

Solution:

Rice = 75g, Margarine = 40g, Meat = 105g

Bread = 20g

Total = 240

Angle of sector represented by meat

= $\frac{105}{240} \times \frac{360^{\circ}}{1}$

= 157.5

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