Another Puzzle
Jul 8, 2020 22:13:30 #
A teacher asked her class a question and gave them 4 possible answers. 5 students picked A; 8 students chose B; 1 student opted for C, and I don’t remember how many chose D. After the teacher looked at all of the answers, she announced that exactly ½ of the class got the right answer. How many students picked D ?
Jul 8, 2020 22:22:30 #
17 views so far. Send me your answer in a PM so as not to spoil it for those who are still thinking about it.
Jul 8, 2020 22:34:00 #
Jul 8, 2020 22:46:37 #
We have a winner; The answer is either 2 or 14. The winner is PQUIGGLE. THERE WERE 54 views.
Jul 9, 2020 07:12:56 #
Howard5252 wrote:
We have a winner; The answer is either 2 or 14. The winner is PQUIGGLE. THERE WERE 54 views.
How can there be 2 right answers?
Jul 9, 2020 07:25:34 #
Jul 9, 2020 07:49:00 #
Dannj wrote:
How can there be 2 right answers?
Just plug in the two numbers for "D". They both work.
Jul 9, 2020 07:51:52 #
Dannj wrote:
How can there be 2 right answers?
You assumed that A,B,and C were the wrong answer and the correct answer D. If D was correct then the number of people who answered D would have to match the total of those who answered A,B, and C. This, of course is one possibility.
Look again, suppose that B was the correct answer; do the math with B as the correct answer.
Jul 9, 2020 07:59:30 #
Dannj wrote:
How can there be 2 right answers?
It was never stated which was correct answer, A, B, C, or D.
Therefore if B is correct, then D=2;, if D is correct, then D=14.
A and C cannot be correct as they cannot be "half the class".
Jul 9, 2020 09:02:19 #
Howard5252 wrote:
You assumed that A,B,and C were the wrong answer and the correct answer D. If D was correct then the number of people who answered D would have to match the total of those who answered A,B, and C. This, of course is one possibility.
Look again, suppose that B was the correct answer; do the math with B as the correct answer.
Look again, suppose that B was the correct answer; do the math with B as the correct answer.
Got it...thanks!
Actually, I didn’t make any assumptions. It just didn’t make sense to me that there could be 2 right answers😊
Jul 9, 2020 09:36:32 #
Dannj wrote:
Got it...thanks!
Actually, I didn’t make any assumptions. It just didn’t make sense to me that there could be 2 right answers😊
Actually, I didn’t make any assumptions. It just didn’t make sense to me that there could be 2 right answers😊
Yah ..... sometimes you have to dig a little deeper for the correct answer. Take a look at The Footrace problem. Enjoy.
Jul 9, 2020 10:24:13 #
Jul 9, 2020 10:29:42 #
deberry wrote:
28
Sorry, wrong. The answer has already been posted.
Jul 10, 2020 19:24:08 #
Jul 10, 2020 19:40:59 #
Mike from Point wrote:
Two students picked D.
The correct answer has been posted 2 days ago, check it out.
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