Solving for Time
Date: 2/1/96 at 20:38:36 From: Anonymous Subject: word problem You are traveling 55 mph over a bridge that is 4260 ft. long. How long does it take to cross the bridge? Help me!
Date: 6/15/96 at 9:14:59 From: Doctor Robert Subject: Re: word problem Remember that distance = (rate)(time). If you solve this for time you get time = (distance)/(rate). Your problem involves two different units of distance. We must convert miles to feet. 1 mile = 5280 ft. The answer to your problem is then time = 4260 ft/290400 ft/hr = .01467 hr You can convert this to minutes by multiplying by 60. The time would be .8801 minutes or approximately 52.8 seconds. Doctor Robert, The Math Forum
Search the Dr. Math Library:
Ask Dr. MathTM
© 1994-2015 The Math Forum