Literal question
A math problem and the student's incorrect answer are printed below. Circle the correct explanation for why the student's answer is wrong.
A kiosk sold soda, juice, biscuits and coffee. A pie-chart was drawn to represent the number of people who took each item. Those who took the juice were represented by 140 degrees and those who took the biscuits by 40 degrees. The size of the angle of those who took coffee was twice as large as the angle for soda. Twenty people took biscuits.
How many more people took juice than those who took coffee?
ANSWER: 60
Why is this not correct? Circle your answer
a) The student calculated the number of people who bought coffee.
b) The student calculated the number of people who bought juice.
c) The student calculated the number of people who bought soda.
d) The student calculated the total number of people who bought juice and coffee.