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Percentages

by kaf » Thu Apr 02, 2009 11:31 pm
Can someoone please help in explaning the solution to this question

At the candy shop, Calvin purchased 24 chocolate bars and 10 gumdrops. If the cost of each chocolate bar is ten times the cost of each gum drop, what percent of the total purchase price was the cost of all of the gum drops?

A.8%
B.6%
C.4%
D.3%
E.2%

Thanks

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by bluementor » Fri Apr 03, 2009 12:26 am
price of chocolate bar = x
price of gumdrop = y

x = 10y

total purchase = 24x + 10y = 24(10y) + 10y = 250y
cost of gums = 10y

Therefore:

cost of gums/total purchase
=10y/250y
=1/25
=4%

Choose C.

-BM-

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by quocbao » Fri Apr 03, 2009 12:38 am
You're very quick bluementor.

I just open the topic and finish the calculation and you answered already :-D

4% is the same to me