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kingbucky
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In a particular robotics workshop, the ratio of the number of experien 24 Mar 2025, 04:58
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!

Difficulty:

35% (medium)

Question Stats:

72% (01:52) correct 28% (02:02) wrong based on 65 sessions

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In a particular robotics workshop, the ratio of the number of experienced engineers to the number of beginner engineers is 2 to 9. If 8 additional experienced engineers join the workshop, the ratio becomes 2 to 5. How many engineers are in the workshop?

(A) 5
(B) 14
(C) 35
(D) 50
(E) 55
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E
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stne
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In a particular robotics workshop, the ratio of the number of experien 24 Mar 2025, 10:34
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kingbucky
In a particular robotics workshop, the ratio of the number of experienced engineers to the number of beginner engineers is 2 to 9. If 8 additional experienced engineers join the workshop, the ratio becomes 2 to 5. How many engineers are in the workshop?

(A) 5
(B) 14
(C) 35
(D) 50
(E) 55
Show more

kingbucky, Thank you for the question.

Please check the answer choices or the question. Total engineers at the end should be a multiple of \(7,\) however option E (OA ) is not a multiple of \(7\).

We have option B and option C as multiple of \(7,\) however before the addition of \(8\) additional experienced engineers,the total engineers should be a multiple of \(11.\)

However when we remove \(8\) from option B and option c we get \(6\) and \(27\), respectively, none of which are multiple of \(11\).

Hence please check the question. Thank you.
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In a particular robotics workshop, the ratio of the number of experien 24 Mar 2025, 11:09
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But, the question says that IF 8 experienced workers join, the ratio becomes....
It does not say that 8 experienced workers joined, and the ratio became...

That is, in an imaginary situation, where in if 8 workers join, the ratio will become....

stne
kingbucky
In a particular robotics workshop, the ratio of the number of experienced engineers to the number of beginner engineers is 2 to 9. If 8 additional experienced engineers join the workshop, the ratio becomes 2 to 5. How many engineers are in the workshop?

(A) 5
(B) 14
(C) 35
(D) 50
(E) 55

kingbucky, Thank you for the question.

Please check the answer choices or the question. Total engineers at the end should be a multiple of \(7,\) however option E (OA ) is not a multiple of \(7\).

We have option B and option C as multiple of \(7,\) however before the addition of \(8\) additional experienced engineers,the total engineers should be a multiple of \(11.\)

However when we remove \(8\) from option B and option c we get \(6\) and \(27\), respectively, none of which are multiple of \(11\).

Hence please check the question. Thank you.
Show more
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In a particular robotics workshop, the ratio of the number of experien 24 Mar 2025, 12:11
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Total Engineers = Experienced engineers (\(E_e\)) + Beginner engineers (\(B_e\)) .........(i)

\(\frac{E_e }{ B_e} = \frac{2k}{9k}\) ........(ii)

\(\frac{2k + 8 }{ 9k} = \frac{2 }{ 5}\)

Solving we get k = 5

From (i) and (ii),

Total Engineers = 2k+9k = 11k = 11*(5) = 55

Answer E.
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In a particular robotics workshop, the ratio of the number of experien 24 Mar 2025, 13:38
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kingbucky
But, the question says that IF 8 experienced workers join, the ratio becomes....
It does not say that 8 experienced workers joined, and the ratio became...

That is, in an imaginary situation, where in if 8 workers join, the ratio will become....

stne
kingbucky
In a particular robotics workshop, the ratio of the number of experienced engineers to the number of beginner engineers is 2 to 9. If 8 additional experienced engineers join the workshop, the ratio becomes 2 to 5. How many engineers are in the workshop?

(A) 5
(B) 14
(C) 35
(D) 50
(E) 55

kingbucky, Thank you for the question.

Please check the answer choices or the question. Total engineers at the end should be a multiple of \(7,\) however option E (OA ) is not a multiple of \(7\).

We have option B and option C as multiple of \(7,\) however before the addition of \(8\) additional experienced engineers,the total engineers should be a multiple of \(11.\)

However when we remove \(8\) from option B and option c we get \(6\) and \(27\), respectively, none of which are multiple of \(11\).

Hence please check the question. Thank you.
Show more
ok . now I see your point.

I feel question is a bit ambiguous. How are we to know whether the # of enginners being asked is after the joining or before the joining?

Better: How many engineers were initially in the workshop?
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