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14 Oct 2017, 22:05
00:00

Difficulty:

25% (medium)

Question Stats:

84% (01:24) correct 16% (02:18) wrong based on 68 sessions

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A man spends $48 to buy 6 hamburgers and 8 colas for his office workers. The next day, he buys 5 hamburgers and 4 colas and spends$32. Assuming the prices of hamburgers and colas remain constant, what is the price of one hamburger and one cola?

A. $6 B.$7
C. $8 D.$9
E. $10 _________________ When everything seems to be going against you, remember that the airplane takes off against the wind, not with it. - Henry Ford The Moment You Think About Giving Up, Think Of The Reason Why You Held On So Long +1 Kudos if you find this post helpful PS Forum Moderator Joined: 25 Feb 2013 Posts: 1203 Location: India GPA: 3.82 A man spends$48 to buy 6 hamburgers and 8 colas  [#permalink]

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14 Oct 2017, 22:11
Skywalker18 wrote:
A man spends $48 to buy 6 hamburgers and 8 colas for his office workers. The next day, he buys 5 hamburgers and 4 colas and spends$32. Assuming the prices of hamburgers and colas remain constant, what is the price of one hamburger and one cola?

A. $6 B.$7
C. $8 D.$9
E. $10 let price of one hamburger be $$x$$ and that of cola be $$y$$ $$6x+8y=48 =>3x+4y=24$$ ----------(1) $$5x+4y=32$$ ----------(2) Subtract equation 1 from 2 to get $$2x=8$$ or $$x=4$$ substitute the value of $$x$$ in any equation to get $$y=3$$ Hence $$x+y=4+3=7$$ Option B A man spends$48 to buy 6 hamburgers and 8 colas &nbs [#permalink] 14 Oct 2017, 22:11
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