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A certain church bell rings the bell twice at half past the hour and 28 Jun 2016, 06:45
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Difficulty:

85% (hard)

Question Stats:

31% (02:33) correct 69% (02:43) wrong based on 13 sessions

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A certain church bell rings the bell twice at half past the hour and four times at the hour plus an additional number of rings equal to what ever time it is. How many rings will the clock make from 6:20 in the morning to 10:10 in the morning?

A. 32.
B. 36.
C. 42.
D. 46.
E. 50.



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AmoyV
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A certain church bell rings the bell twice at half past the hour and 28 Jun 2016, 08:12
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Bunuel
A certain church bell rings the bell twice at half past the hour and four times at the hour plus an additional number of rings equal to what ever time it is. How many rings will the clock make from 6:20 in the morning to 10:10 in the morning?

A. 32.
B. 36.
C. 42.
D. 46.
E. 50.
Show more

# of half hours = 4
Rings for half hours = 4*2=8....(1)

# of full hours = 4
Rings for full hours = 4*4=16...(2)

Additional rings = 7+8+9+10=34...(3)

(1)+(2)+(3)=8+16+34=58

P.s. Where did I go wrong here?
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A certain church bell rings the bell twice at half past the hour and 29 Jun 2016, 04:32
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AmoyV


# of half hours = 4
Rings for half hours = 4*2=8....(1)

# of full hours = 4
Rings for full hours = 4*4=16...(2)

Additional rings = 7+8+9+10=34...(3)

(1)+(2)+(3)=8+16+34=58

P.s. Where did I go wrong here?
Show more

Hi,
I believe you did not go wrong but the there is something in the wording of the question itself, albeit its good idea.

I agree with you on step 1 & 2. However, I understood the wording in the question as follows:

(four times at the hour plus an additional number of rings) require equal to what ever time it. My interpretation will be:

@ 7 o'clock, it will ring 4 (calculated in step 2) + 3 rings = 7 rings (to be equal the time what ever it is)
@ 8 o'clock, it will ring 4 (calculated in step 2) + 4 rings = 8 rings (to be equal the time what ever it is)
@ 9 o'clock, it will ring 4 (calculated in step 2) + 5 rings = 9 rings (to be equal the time what ever it is)
10 o'clock, it will ring 4 (calculated in step 2) + 6 rings = 10 rings (to be equal the time what ever it is)

Hence step 3:
3+4+5+6=18

Step 1, 2 & 3

8+16+18= 42

Answer: C. This is what I got according my understanding.

In some free resources, they do not consume time in high quality wording. Here is the source

https://www.hub4tech.com/certain-church- ... ll-twice-h
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A certain church bell rings the bell twice at half past the hour and 29 Jun 2016, 07:31
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AmoyV


# of half hours = 4
Rings for half hours = 4*2=8....(1)

# of full hours = 4
Rings for full hours = 4*4=16...(2)

Additional rings = 7+8+9+10=34...(3)

(1)+(2)+(3)=8+16+34=58

P.s. Where did I go wrong here?

Hi,
I believe you did not go wrong but the there is something in the wording of the question itself, albeit its good idea.

I agree with you on step 1 & 2. However, I understood the wording in the question as follows:

(four times at the hour plus an additional number of rings) require equal to what ever time it. My interpretation will be:

@ 7 o'clock, it will ring 4 (calculated in step 2) + 3 rings = 7 rings (to be equal the time what ever it is)
@ 8 o'clock, it will ring 4 (calculated in step 2) + 4 rings = 8 rings (to be equal the time what ever it is)
@ 9 o'clock, it will ring 4 (calculated in step 2) + 5 rings = 9 rings (to be equal the time what ever it is)
10 o'clock, it will ring 4 (calculated in step 2) + 6 rings = 10 rings (to be equal the time what ever it is)

Hence step 3:
3+4+5+6=18

Step 1, 2 & 3

8+16+18= 42

Answer: C. This is what I got according my understanding.

In some free resources, they do not consume time in high quality wording. Here is the source

https://www.hub4tech.com/certain-church- ... ll-twice-h
Show more

Thanks for helping me out. You are most probably correct, since you could at least arrive at a given option. But don't you think it would be better to just write "equal to what ever time it" rather than "four times at the hour plus an additional number of rings equal to what ever time it is" (If C indeed is the correct option)
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A certain church bell rings the bell twice at half past the hour and 29 Jun 2016, 07:42
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AmoyV


Thanks for helping me out. You are most probably correct, since you could at least arrive at a given option. But don't you think it would be better to just write "equal to what ever time it" rather than "four times at the hour plus an additional number of rings equal to what ever time it is" (If C indeed is the correct option)
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I totally agree with you. Crafting GMAT question is not an easy task. In a GMAC's article, they mentioned reason why GMAT cost is high. They cited that any new questions takes many revision to be correct and ambiguity-free and hence cost them.

Let's see the answer when raveled.
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A certain church bell rings the bell twice at half past the hour and 05 Aug 2016, 23:06
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Bunuel,
can you please provide solution to the question?
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A certain church bell rings the bell twice at half past the hour and 07 Aug 2016, 07:07
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Bunuel
A certain church bell rings the bell twice at half past the hour and four times at the hour plus an additional number of rings equal to what ever time it is. How many rings will the clock make from 6:20 in the morning to 10:10 in the morning?

A. 32.
B. 36.
C. 42.
D. 46.
E. 50.
Show more


Please add the correct option 58 or change the wording of this question-As per the wording , only option possible is 58
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A certain church bell rings the bell twice at half past the hour and 07 Aug 2016, 07:23
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Same here. I think I am there is something wrong with the wording.



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Hi there,
This topic has been closed and archived due to inactivity or violation of community quality standards. No more replies are possible here.
Where to now? Join ongoing discussions on thousands of quality questions in our Problem Solving (PS) Forum
Still interested in this question? Check out the "Best Topics" block above for a better discussion on this exact question, as well as several more related questions.
Thank you for understanding, and happy exploring!
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Bunuel
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109763 posts