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Manager
Manager
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Joined: 14 May 2007
Posts: 175
Location: India
Followers: 2

Kudos [?]: 32 [0], given: 11

GMAT Tests User
Percent ques [#permalink] New post 11 Dec 2007, 09:54
Hi,

I came across the following ques:

Bob buys 40% of total no of ice creams and 25% of no. of chocolate bars. In total bob bought 12 items and there were 20 ice creams when bob entered the shop. how many chocolate bars were there ?

(a) 10
(b) 17
(c) 28
(d) 52
(e) 71

My answer came to (b). Though mine came to 16 I chose B.

Am I right? :?
Director
Director
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Joined: 12 Jul 2007
Posts: 867
Followers: 12

Kudos [?]: 196 [0], given: 0

GMAT Tests User
 [#permalink] New post 11 Dec 2007, 10:53
Let's work this out.

Let X = number of ice creams he bought
Let Y = number of chocolate bars he bought

X + Y = 12

He bought 40% of the ice creams. If there were 20 ice creams when he walked in that means he bought .4*20 = 8 ice creams

so X = 8

8+y = 12
y = 4

so he bought 4 chocolate bars and that represented 25% of the total chocolate. 4*4 = 16

yeah...my answer is coming out as 16 as well. Typo maybe? I'm pretty confident that 16 is correct.
Manager
Manager
User avatar
Joined: 14 May 2007
Posts: 175
Location: India
Followers: 2

Kudos [?]: 32 [0], given: 11

GMAT Tests User
Thanks [#permalink] New post 11 Dec 2007, 21:35
Thanks dude, I think we are correct. :-D
Thanks   [#permalink] 11 Dec 2007, 21:35
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