The door makes 4 complete rotations in 2 minutes. There is room for a maximum two people in each of the tree door sectors. What is the maximum number of people that can enter the building through the door in 20 minutes?
Answers
Given : The door makes 4 complete rotations in 2 minutes. There is room for a maximum two people in each of the three door sectors.
To Find : What is the maximum number of people that can enter the building through the door in 20 minutes
Solution:
room for a maximum 2 people in each of the three door sectors
=> 2x 3 = 6 people can enter in 1 rotation.
The door makes 4 complete rotations in 2 minutes
=> Door makes 40 complete rotations in 20 minutes
In 1 rotation people can enter = 6
=> in 40 rotations people can enter = 6 x 40
=> in 40 rotations people can enter = 240
maximum number of people that can enter the building through the door in 20 minutes = 240
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