The speed of a freight train is 15ph slower that the speed of a passenger train. The freight train travels 390 mi in the same time that it takes the passenger train to travel 480 mi. Find the speed of each train.
It takes 60 oz of grass seed to seed 3000ft^2 of lawn. At the rate how much would be needed to seed 5000ft^2 of lawn?© BrainMass Inc. brainmass.com July 18, 2018, 5:05 am ad1c9bdddf
The speed of the freight train: x
the speed of the passenger train is therefore x+15
The time it takes an object traveling with speed v to travel distance D is:
t = D/v
Hence the time it ...
Ratio and proportion word problems are solved.