Tristar Posted June 4, 2015 Share Posted June 4, 2015 (edited) Hi there! Here below is a maths test question for 15-year olds. Just give it a try: A revolving door has three areas within a circular-shaped space. In one minute the door goes around 4 times. Two people can fit in each of the three door sectors. What is the maximum number of people that can enter the building through the door in 30 minutes? (The diameter of the circle = 200 cm, the Exit being located just opposite the Entrance). Edited June 4, 2015 by Tristar Quote Link to comment Share on other sites More sharing options...
thegmattutor Posted July 23, 2015 Share Posted July 23, 2015 Hi there! Here below is a maths test question for 15-year olds. Just give it a try: A revolving door has three areas within a circular-shaped space. In one minute the door goes around 4 times. Two people can fit in each of the three door sectors. What is the maximum number of people that can enter the building through the door in 30 minutes? (The diameter of the circle = 200 cm, the Exit being located just opposite the Entrance). I think it is 24 * 30 = 720. Quote Link to comment Share on other sites More sharing options...
Tristar Posted July 24, 2015 Author Share Posted July 24, 2015 Yes, the correct answer is 720 people. Quote Link to comment Share on other sites More sharing options...
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