anik1989 wrote:
PLEASE EXPLAIN
In a class with 20 students, a test was administered, scored only in whole numbers from 0 to 10. At least one
student got every possible score, and the average was 7.
23.
Quanti ty A
Quanti ty B
4 The lowest score that two students could have received
ANS-B
I think the questiion would be more inaccurate. Let me put it this way.
In a class with 20 students, a test was administered, scored only in whole numbers from 0 to 10. At least one
student got every possible score, and the average was 7.
Quant A
4
Quant B
The lowest score that two students could have received.
Then, for this question, we are told that the score ranges from 0-10, and the average for the 20 students are 7.
Then we can deduce that the sum of scores from 20 students are 140.
Yet, we are told that At least one student got every possible score. That means that for every score, at least one studnet will have get the score.
Thus, we can know that there are 11 students getting scores from 0-10 individually. Then, the sum of the 11 students would be (0+10)11/2= 55
Now we deduct 55 from 140 with the remaining of 85. For 9 students with the totla of 85. We can think of one extreme scenario at which one student get 5 others geeting 10.
Then, we can know that The lowest score that two students could have received would be 15 (Quant B) which is > 4 (Quant A).