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 A certain doctor suggests that an individual’s daily water intake be 1/2 ounce per pound of body weight plus 8 ounces for every 25 pounds by which the individual exceeds his or her ideal weight. If this doctor suggests a daily water intake of 136 ounces for a particular 240-pound individual, how many pounds above [...]
Written by bloodlust5 on August 3rd, 2008 with
6 comments.
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 A certain doctor suggests that an individual’s daily water intake be 1/2 ounce per pound of body weight plus 8 ounces for every 25 pounds by which the individual exceeds his or her ideal weight. If this doctor suggests a daily water intake of 136 ounces for a particular 240-pound individual, how many pounds above his or her ideal weight is that individual?
(A)12 1/2
(B) 16
(C) 30
(D) 50
(E) 120
GRE Question of the Day by bloodlust5 on August 3rd, 2008 with
6 answers.
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Anupam
#2.
August 3rd, 2008, at 8:16 PM.
Explanation goes like this:
240 is his body weight , so 1/2 ounce per body weight amounts to 120..
apart from it his intake should be 8 ounces for every 25 pounds..Let it be ‘x’
prescribed intake is 120+x=136
x=16
8 ounces for 25 pounds
so 26 ounces for 50 pounds
Therefore he weighs extra by 50 pounds!
nirjal
#3.
August 3rd, 2008, at 8:43 PM.
well i tried this way,
let suposse,
a = ideal weight
e = extra weight
then,
from second statement ,
a + e = 240 ——(i)
from first statement
a/2 + 8 * e/25 = 136 ——(ii)
but solving results in -ve ?? and also too complex
Anupam
#4.
August 3rd, 2008, at 9:10 PM.
according to your assumption ‘a’ is not ideal weight rather actual weight …
“1/2 ounce per pound of body weight” and not “1/2 ounce per pound of ideal weight”
so ‘a’ is 240
so
a/2 + 8 * e/25 = 136
240/2 +8 * e/25 = 136
120+8 * e/25 = 136
8 * e/25 = 16
e =16*25/8
e=50
‘e’ is nothing but the extra weight
Sailaja
#5.
August 3rd, 2008, at 9:19 PM.
Yes its D ( 50 Pounds )
saurabh
#6.
August 21st, 2008, at 12:11 AM.
its d 50
reason
since weight given is 240 pound and we have 136 ounces of water prescribed by the doctor so
since 2 ounce for each pound of body weight hence 120 ounce water which left us (136-120=) 16 ounces which acounts for 50 pound extra weight according to question
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#1. August 3rd, 2008, at 8:13 PM.
i guess it should be D)50