One afternoon, 5 friends rented 3 bicycles from 5.00 p.m. to 6.30 p.m. and took turns to ride on them. At any time, 3 of them cycled while the other 2 friends rested.
If each of them had the same amount of cycling time, how many minutes did each person ride on a bicycle?
Hint: There is an “easy” way and also a “complicated” way to do this question. The “easy” way involves calculating total cycling time, while the “complicated” way involves working out a timetable to determine exactly who is cycling at which time.
(Source: Hardwarezone)
(Ans: 54)
Singapore Maths Tuition 
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