Answer:
a) 99
b) 20
c) 27
d) 126
Explanation:
a) 18% of 550 = 99
b) 360 deg = 550 people
1 deg = 550/360 people
72 deg = 110 people
x% of 550 = 110
x = 20
c) %of speedy + 18 + 35 + 20 = 100
% of speedy = 27
d) 20% = 72deg
1% = 72/20 deg
35% = 72/20 * 35 deg = 126 deg