SOLUTION: The cost of renting a bus for a trip to the mountains was split evenly by 20 students. The day before the trip, 10 more students decided to travel too. As a result of dividing the
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Question 824607: The cost of renting a bus for a trip to the mountains was split evenly by 20 students. The day before the trip, 10 more students decided to travel too. As a result of dividing the cost evenly among the 30 students each student had to pay $9 less than originally. What was the total cost of renting the bus? Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! The cost of renting a bus for a trip to the mountains was split evenly by 20 students. The day before the trip, 10 more students decided to travel too. As a result of dividing the cost evenly among the 30 students each student had to pay $9 less than originally. What was the total cost of renting the bus?
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Original DATA:
average cost = c/20 dollars per student
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Expanded group DATA:
average cost = c/30 dollars per student
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Equation:
new average - old average = 9
c/20 - c/30 = 9
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30c - 20c = 9*20(30)
10c = 180*30
cost = 18*30 = $540.00
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Cheers,
Stan H.
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