In preparing rice cutlets, a cook used 75 g of rice, 40 g of margarine, 105 g of meat and 20 g of bread crumbs. Find the angle of the sector which represents meat in a pie chart.
Worked solution (try it first)
Total mass: 75+40+105+20=240 g.
Meat's share of the circle: 240105×360∘=157.5∘, option D.