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29 Jan 2014, 02:13
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C
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Difficulty:
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86% (01:00) correct
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The Official Guide For GMAT® Quantitative Review, 2ND Edition
If 2x(5n) = t, what is the value of t?
(1) x= n+ 3
(2) 2x = 32
If 2x(5n) = t, what is the value of t?
(1) x= n+ 3
(2) 2x = 32
Data Sufficiency
Question: 61
Category: Algebra First- and second-degree equations
Page: 157
Difficulty: 600
Question: 61
Category: Algebra First- and second-degree equations
Page: 157
Difficulty: 600
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29 Jan 2014, 02:13
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SOLUTION
If 2x(5n) = t, what is the value of t?
(1) x= n+ 3 --> 2(n+3)(5n) = t. Not sufficient.
(2) 2x = 32 --> x=16. Not sufficient.
(1)+(2) From (2) we have that x = 16, thus from (1): n = x - 3 = 13. We can find t. Sufficient.
Answer: C.
If 2x(5n) = t, what is the value of t?
(1) x= n+ 3 --> 2(n+3)(5n) = t. Not sufficient.
(2) 2x = 32 --> x=16. Not sufficient.
(1)+(2) From (2) we have that x = 16, thus from (1): n = x - 3 = 13. We can find t. Sufficient.
Answer: C.
29 Jan 2014, 02:47
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From question stimulus:10nx=t
From S1:x=n+3.Insufficient as we want absolute value of both n and x.
From S2:x=16.Insufficient as it doesn't provide value of n
Combining the 2 statements,we get x=16 and n=13.Hence,we can find out t.
Ans.C
From S1:x=n+3.Insufficient as we want absolute value of both n and x.
From S2:x=16.Insufficient as it doesn't provide value of n
Combining the 2 statements,we get x=16 and n=13.Hence,we can find out t.
Ans.C
