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Mensa Brainteasers

Week 20 - Thursday 

A fire engine travels five miles to a fire at a speed of 45 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 putting out the fire, how many gallons will it have left over?



22 May 2017
Reveal answer