Calorie trouble : PS Archive
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# Calorie trouble

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Intern
Joined: 05 Nov 2009
Posts: 15
Followers: 0

Kudos [?]: 4 [0], given: 5

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01 Dec 2009, 09:42
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Question Stats:

100% (00:00) correct 0% (00:00) wrong based on 1 sessions

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A breakfast that consists of 1 ounce of corn puffs and 8 ounces of fruit X provides 257 calories. When 8 ounces of fruit Y is substituted for the 8 ounces of fruit X, the total number of calories is reduced to 185. If fruit X provides 1.8 times as many calories as fruit Y, how many calories does 8 ounces of fruit Y alone provide ?
(A) 11.25
(B) 72
(C) 90
(D) 95
(E) 129.6

OA is C

tried it.. but didn't get the answer!
Senior Manager
Joined: 30 Aug 2009
Posts: 286
Location: India
Concentration: General Management
Followers: 3

Kudos [?]: 162 [0], given: 5

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01 Dec 2009, 12:07
Minotaur wrote:
A breakfast that consists of 1 ounce of corn puffs and 8 ounces of fruit X provides 257 calories. When 8 ounces of fruit Y is substituted for the 8 ounces of fruit X, the total number of calories is reduced to 185. If fruit X provides 1.8 times as many calories as fruit Y, how many calories does 8 ounces of fruit Y alone provide ?
(A) 11.25
(B) 72
(C) 90
(D) 95
(E) 129.6

OA is C

tried it.. but didn't get the answer!

we need to find the calories provided by 8ounce of Y
by equating the given values we get
1cornpuff + 8X = 257----1
1cornpuff + 8Y = 185-----2

subtracting 1 and 2 we get 8X-8Y = 72 or X-Y = 9------3

given X=1.8Y and substituting this in 3 we get 0.8Y =9 or 8Y = 90 -option C
Re: Calorie trouble   [#permalink] 01 Dec 2009, 12:07
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