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Adrian Ng Principal Trainer. Proudly Presents Heuristics Approach Solving Challenging Primary Mathematical Problems. Systematic listing.
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Adrian Ng Principal Trainer Proudly Presents Heuristics Approach Solving Challenging Primary Mathematical Problems
Six friends decided to rent computers from 2.00pm to 4.30pm. Four of them were playing while the other two would watch. If the cycle continues, and each of them played for equal number of minutes, how many minutes will each person get to play? 2009 PSLE question Friends Group 1 1 1 1 1 1 1 2 1 1 3 1 1 1 1 1 1 1 4 1 1 1 1 5 1 6 1 1 1 1 4 4 4 4 4 4 Total (each) 2.00pm to 4.30pm 150min 150min/6 = 25 min per group 25x4 = 100 min Ans: 100 min
Note: This question was provided by students who have sat for the 2009 examination. It may vary from the actual examination question.