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kanishka12
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Please correct the answer , Answer is B .
KANISHKA12 please check the answers you are providing.
DS 7
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gmatter2012
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Brent@GMATPrepNow
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Given: 1 < d < 2gmatter2012 wrote: ↑Tue Sep 01, 2020 1:34 amPlease correct the answer , Answer is B .
KANISHKA12 please check the answers you are providing.
Target question: Is the tenths’ digit of the decimal representation of d equal to 9?
Statement 1: d + 0.01 < 2
Subtract 0.01 from both sides of the inequality to get: d < 1.99
So, it could be the case that d = 1.93, in which case the answer to the target question is YES, the tenths digit is 9
Or it could be the case that d = 1.77, in which case the answer to the target question is NO, the tenths digit is not 9
Since we can’t answer the target question with certainty, statement 1 is NOT SUFFICIENT
Statement 2: d + 0.05 > 2
Subtract 0.05 from both sides of the inequality to get: d > 1.95
Since we already know that d < 2, we can combine these inequalities to get: 1.95 < d < 2
So, it MUST be the case that the tenths digit is 9
Since we can answer the target question with certainty, statement 2 is SUFFICIENT
Answer: B
Cheers,
Brent
Brent Hanneson - Creator of GMATPrepNow.com
