At car dealership x, the total profit from sales increased by 10% over previous year, while the number of cars sold decreased by 10% over previous year, Approximately, what was the average % increased in profit per car over previous year?
A-18%,
B-20%,
C-22%,
D-23%,
E-25%
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At car dealership x...
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amising6
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the total profit from sales previous year be xbpgen wrote:At car dealership x, the total profit from sales increased by 10% over previous year, while the number of cars sold decreased by 10% over previous year, Approximately, what was the average % increased in profit per car over previous year?
A-18%,
B-20%,
C-22%,
D-23%,
E-25%
the number of cars sold previous year be s
average profit per car=x/s
yhis year
total profit has increased 10 %=1.1x
the number of car sold decreased by 10 % =0.9s
average profit per car=1.1x/0.9s
increase in profit =1.1x/0.9s - x/s=0.2x/s
so increase in % over previous year =(0.2x/s)/(x/s) *100=20 %
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selango
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total profit from sales previous year be 1000
number of cars sold previous year be 100
average profit per car=1000/100=10
this year
total profit has increased 10 %=1100
number of car sold decreased by 10% =90
average profit per car=1100/90=110/9
increase in profit =110/9-10=20/9
increase in % over previous year =20/9/10=20/90=.22
=22%
number of cars sold previous year be 100
average profit per car=1000/100=10
this year
total profit has increased 10 %=1100
number of car sold decreased by 10% =90
average profit per car=1100/90=110/9
increase in profit =110/9-10=20/9
increase in % over previous year =20/9/10=20/90=.22
=22%
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selango
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- Joined: Tue Dec 29, 2009 1:28 am
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amising6 wrote:the total profit from sales previous year be xbpgen wrote:At car dealership x, the total profit from sales increased by 10% over previous year, while the number of cars sold decreased by 10% over previous year, Approximately, what was the average % increased in profit per car over previous year?
A-18%,
B-20%,
C-22%,
D-23%,
E-25%
the number of cars sold previous year be s
average profit per car=x/s
yhis year
total profit has increased 10 %=1.1x
the number of car sold decreased by 10 % =0.9s
average profit per car=1.1x/0.9s
increase in profit =1.1x/0.9s - x/s=0.2x/s [its .22x/s]
so increase in % over previous year =(0.22x/s)/(x/s) *100=22 %
