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05 Jul 2018, 00:52
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C
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Difficulty:
5%
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Question Stats:
92% (01:21) correct
8%
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wrong
based on 98
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[GMAT math practice question]
The relationship between the weight W in pounds and the height \(H\) in inches of an object is given by the equation, \(W = 110 +5*(H-60)\). If the height is increased by \(10\) inches, by how much does the weight increase?
A. 30 pounds
B. 40 pounds
C. 50 pounds
D. 60 pounds
E. 70 pounds
The relationship between the weight W in pounds and the height \(H\) in inches of an object is given by the equation, \(W = 110 +5*(H-60)\). If the height is increased by \(10\) inches, by how much does the weight increase?
A. 30 pounds
B. 40 pounds
C. 50 pounds
D. 60 pounds
E. 70 pounds
05 Jul 2018, 01:09
Kudos
Bookmarks
I picked some quick numbers
Let's say H=60 then W=110+5(60-60)=110
Now increase H by 10 inches: H=70 W=110+5(70-60)=160
160-110=50
In My Opinion
Ans: C
Let's say H=60 then W=110+5(60-60)=110
Now increase H by 10 inches: H=70 W=110+5(70-60)=160
160-110=50
In My Opinion
Ans: C
05 Jul 2018, 01:14
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Bookmarks
MathRevolution
The only difference when H becomes H+10 is:-
5*(H-60)-5(H+10-60)=300-250=50 (Since 110 is constant)
Ans. C
