SOLUTION: A car travelling at an average speed of 90km\h covers a certain distance in 4 hours.At what constent speed must the car travel to cover the same distance in 3 hours.

Question 947548: A car travelling at an average speed of 90km\h covers a certain distance in 4 hours.At what constent speed must the car travel to cover the same distance in 3 hours.

Answer by andora(7) (Show Source): You can put this solution on YOUR website!
since it's 90km/h we make it 90km/1hour then multiply it by 4 on two sides so it become 360km/4hours now we remove 4 hours and replace it with 3 hours and it goes like 360km/3hours which equals 120km/h
90km/1hour
=360km/4hours
=90km/h
so
360km/3hours
=120km/h
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