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Mensa Brainteasers

Week 1 - Thursday 

A fire engine travels six miles to a fire at a speed of 40 mph.

Its tank holds 500 gallons of water but has been leaking throughout the journey at a rate of 25 gallons per hour. 

If the fire engine uses 496 gallons of water to put out the fire, how much water will it have remaining?










08 Jan 2018
Reveal answer

A quarter of a gallon.