Making Lots of Shirts

In a textile factory, 5 machines take exactly 5 minutes to make 5 shirts. How many minutes will it take 100 machines to produce 100 shirts?

5 minutes. It takes each machine 5 minutes to make a shirt, so if you have all 100 machines running at the same time, they’ll produce the 100 shirts in 5 minutes.

Posted in Brain Teasers


2 Comments on "Making Lots of Shirts"

MathyMathMath says
August 27, 2020 @ 00:03

Yeah, these trick your instinct. Similar is the ‘Paul decided to buy a ball and a bat. Together they cost $1.10. The bat was $1.00 more then the ball. How much was the ball?’ You might automatically think, ’10c! It’s 10c!’, but WRONG!

Miles says
February 3, 2022 @ 17:21

5 minutes.

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