SOLUTION: Car traveled for 1/2 hour at r mph, then increased the speed by 10 mph and traveled for 1 1/2 hour more. How far did the car go?
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Question 1045435: Car traveled for 1/2 hour at r mph, then increased the speed by 10 mph and traveled for 1 1/2 hour more. How far did the car go?
Found 2 solutions by stanbon, MathLover1:
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Car traveled for 1/2 hour at r mph, then increased the speed by 10 mph and traveled for 1 1/2 hour more. How far did the car go?
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1st leg DATA:
time = 1/2 hr ; rate = r mph ; dist = t*r = (1/2)r miles
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2nd leg DATA:
time = (3/2) hr ; rate = r+10 mph ; dist = (3/2)(r+10) miles
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Ans::
Total distance = (1/2)r + (3/2)r + (3/2)10 = 2r + 15 miles
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Cheers,
Stan H.
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Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
at rate , => so, distance is
then increased the speed by , so we have
or at => and the distance will be
Total Distance will be:
miles
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