60 people were asked to name their favourite pizza topping. Everyone chose cheese, ham or mushroom.
A pie chart was drawn. The angles of the sectors for cheese, ham and mushroom are in the ratio 5:4:3.
(a) Work out the size of the angle of the sector for cheese.
(b) Work out the number of people who chose mushroom.
(c) A second survey asked 180 people the same question. Its pie chart has exactly the same three angles as the first. Work out how many more people chose mushroom in the second survey than in the first. ●●●●●Level 56 marksStart→