Hi ,
I think, the answer is D.
Let's understand the rules here. I am pasting the rules defined from Bunuel.
Rounding is simplifying a number to a certain place value. To round the decimal drop the extra decimal places, and if the first dropped digit is 5 or greater, round up the last digit that you keep. If the first dropped digit is 4 or smaller, round down (keep the same) the last digit that you keep.
Example:
5.3485 rounded to the nearest tenth = 5.3, since the dropped 4 is less than 5.
5.3485 rounded to the nearest hundredth = 5.35, since the dropped 8 is greater than 5.
5.3485 rounded to the nearest thousandth = 5.349, since the dropped 5 is equal to 5.
So, 1.425 rounded to the nearest hundredth = 1.43, since the dropped 5 is equal to 5.
Hope it helps.
more details are here in this link.
https://gmatclub.com/forum/rounding-off-95061.htmlWith the above knowledge and understanding here is how we can solve.
"
rounded to the nearest percentage point" -> means rounded to the nearest hundredth point.
Statement 1 :
When d is rounded to the nearest thousandth, its value is 0.755.
It means the d = 0.7549 and rounded to nearest thousandth equals to 0.755
>from the above rules rounded to nearest hundredth equals to 0.75
There is only one d value and is sufficient
Statement 2 : 0 < n < 5
Here n= 1,2,3,4
and d = 0.75n9 for all n= 1,2,3,4 we get 0.75 as the d value if round to the nearest hundredth, which is sufficient.
So d = 75 % can be obtained from both statements alone. Therefore, the answer is D.
After going through the above rules, I corrected my earlier understanding.
I was thinking earlier, 5.3485 rounded to the nearest tenth = 5.4, since 5.3485 -> 5.349 ->5.35 ->5.4.
Looks like this is wrong.