In a survey of $720$ students about their favourite subject, a pie chart gives Maths $150^\circ$, Science…
In a survey of $720$ students about their favourite subject, a pie chart gives Maths $150^\circ$, Science $120^\circ$, English $60^\circ$ and Hindi $30^\circ$. The number of students who chose Maths is:
$200$
$240$
$300$
$360$
Solution
Number $= (150/360)\times 720 = (5/12)\times 720 = 300$.