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a Starbuck’s ® run

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by sanju09 » Fri May 14, 2010 2:14 am
Phil is making a Starbuck's ® run for his exhausted Math 105 classes. He is going to buy a combination of Lattes and Cappuccinos. The Lattes cost $4 each and the Cappuccinos cost $3 each. If he needs 30 drinks total and has $100 to spend, how many of Cappuccinos should he buy?
(A) 5
(B) 10
(C) 15
(D) 20
(E) 25
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Source: — Problem Solving |

by gmatjedi » Fri May 14, 2010 3:49 am
L= latte
C= cappucino

4L+3C=100
L+C=30

simultaneous equations

C=20
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