Understanding Compound Interest Using Simple Interest (Rate Compounded Annually)
A quarter of ...
Question
A quarter of the number of students in a class play cricket, whereas others play football. If the number of students playing football is 15, how many students play cricket?
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Solution
A quarter of the students play cricket, implies that three quarters of the students play football.
We are given that 15 students play football, so three quarters of the total strength of class is 15.
Three one quarters make a three quarter.
So, one quarter of the total strength = 15 ÷ 3 = 5.
Hence, 5 students play cricket.