# Thread: Some practice quantitative questions ...

1. Good post? |
Heed the question statements carefully before diving in with the computation. Make sure you know what you want to compute )

Cheers
Ali

//Kaplan
Which of the following is 850 percent greater than 8 X 10^3? (^ meaning raised to power)

A. 8.5 x 10^3
B. 6.4 x 10^4
C. 6.8 x 10^4
D. 7.6 x 10^4
E. 1.6 x 10^5

//Kaplan
In a certain history class, all except 23 students scored under 85 on a test. If 18 students scored over 85 on this test, how many students are there in the history class?

A. 33
B. 37
C. 39
D. 41
E. Can not be determined from the information given

2. Good post? |
d & e

3. Good post? |
Originally posted by Vinay

d & e
Yup Vinay. Very correct : )), though I would love to benefit from your reasoning in the second question.

Regards,
Ali

4. Good post? |
in the second question, it has been given tht all students except 23 have got marks under 85.

if class has x students then x-23 have got under 85 marks.
23 have got 85 or above 85.
its also given tht 18 out of 23 scored above 85.
though frm this we can say tht 5 scored 85 marks but tht cant help us in calculating X.
if we wer provided with no. of students gettin less than 85 then total no. of students could have been calculated frm tht.

Thus information provided is insufficient to get an answer.

5. Good post? |
I would have been fooled on Q2 if I hadn't see Vinays answer !!! This is tricky!

6. Good post? |
Originally posted by Vinay

in the second question, it has been given tht all students except 23 have got marks under 85.

if class has x students then x-23 have got under 85 marks.
23 have got 85 or above 85.
its also given tht 18 out of 23 scored above 85.
though frm this we can say tht 5 scored 85 marks but tht cant help us in calculating X.
if we wer provided with no. of students gettin less than 85 then total no. of students could have been calculated frm tht.

Thus information provided is insufficient to get an answer.
Hi

Thank you for providing the explanation. Now I see why the answer should be E. Yes kfree, the second question attempts to hide behind rather evasive and equivocal language

Cheers
Cheers

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