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Re: If j and k each represent positive single digits, and y = 2.j3k, what [#permalink]
Answer is B

If j and k each represent positive single digits, and y = 2.j3k, what is y rounded to the nearest tenth?

We need to know the value of j (either before or after rounding of y).

(1) j > k
j can be any value. Not Sufficient.

(2) If y is rounded to the nearest hundredth, the result is 2.74.
Result is 2.74. Value of j before rounding was 6. Sufficient.
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Re: If j and k each represent positive single digits, and y = 2.j3k, what [#permalink]
Great Question
Here, rounding y to nearest tenths will result in 2.J (as the next digit is 3)
Thus we need to get J. We don't to find K
Statement 1
J>k
Clearly since multiple values of j can be computed from this=> This statement is insufficient
Statement 2
From this statement we can conclude two things
1)J must be 7
2)k must be greater than 4

As we already know that we don't need k we just need J and we have got J as 7
Thus this statement is sufficient to say that Y rounded to nearest tenths would result in 2.7
hence this statement is sufficient

Hence B
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Re: If j and k each represent positive single digits, and y = 2.j3k, what [#permalink]
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Re: If j and k each represent positive single digits, and y = 2.j3k, what [#permalink]
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