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
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