SOLUTION: Bob drove from home to work at 80mph. After work the traffic was​ heavier, and he drove home at 25mph. His driving time to and from work was 1hour and
3 minutes. How far do
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-> SOLUTION: Bob drove from home to work at 80mph. After work the traffic was​ heavier, and he drove home at 25mph. His driving time to and from work was 1hour and
3 minutes. How far do
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Question 1028831: Bob drove from home to work at 80mph. After work the traffic was heavier, and he drove home at 25mph. His driving time to and from work was 1hour and
3 minutes. How far does he live from his job? Found 2 solutions by ikleyn, stanbon:Answer by ikleyn(52878) (Show Source):
You can put this solution on YOUR website! .
Bob drove from home to work at 80 mph. After work the traffic was heavier, and he drove home at 25 mph.
His driving time to and from work was 1 hour and
3 minutes. How far does he live from his job?
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One of standard Travel and Distance problems.
Let L be the distance under the question.
Then is the time spent from home to work, and is the time to return back.
Your equation is
+ = = . (The right side is 1 hour and 3 minutes).
To solve it, multiply both sides by 400 to get rid off the denominators.
Then complete it yourself.
You can put this solution on YOUR website! Bob drove from home to work at 80mph. After work the traffic was heavier, and he drove home at 25mph. His driving time to and from work was 1hour and
3 minutes. How far does he live from his job?
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To work DATA:
rate = 80 mph ; distance = x miles ; time = d/r = x/80 hrs
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To home DATA:
rate = 25 mph ; distance = x miles ; time = x/25 hrs
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Equation::
time + time = time
x/80 + x/25 = 63/60
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60*25x + 60*80x = 63*80*25
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1500x + 4800x = 126000
63000x = 126000
x = 126/63
x = 2 miles
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Cheers,
Stan H.
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