Mathematics 4024 · O Level · Statistical charts and diagrams
Statistical charts and diagrams — practice question
A pie chart shows the counts of adults, girls and boys in a group of people. The angles for the adults and girls are $80^\circ$ and $120^\circ$ respectively.
(a)[1]
Complete the pie chart by adding the missing part.
(b)[1]
Give the ratio of numbers of adults : girls : boys as $a:b:c$, with $a,b,c$ being the smallest whole numbers possible.
(c)[1]
There are 6 more girls than adults. Calculate the total number of people in the group.
Worked solution & mark scheme
This 3-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Valid line” …