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Bunuel
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A time-study specialist has set the production rate for each worker on 11 Mar 2019, 02:24
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D
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Difficulty:

35% (medium)

Question Stats:

75% (01:44) correct 25% (01:56) wrong based on 165 sessions

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A time-study specialist has set the production rate for each worker on a certain job at 22 units every 3 hours. At this rate what is the minimum number of workers that should be put on the job if at least 90 units are to be produced per hour?

A. 5
B. 8
C. 12
D. 13
E. 30
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D
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A time-study specialist has set the production rate for each worker on 11 Mar 2019, 05:55
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Bunuel
A time-study specialist has set the production rate for each worker on a certain job at 22 units every 3 hours. At this rate what is the minimum number of workers that should be put on the job if at least 90 units are to be produced per hour?

A. 5
B. 8
C. 12
D. 13
E. 30
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rate per hr ; 22/3
so for 90 units
90*3/22 = 12
Atleast 13
IMO D
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A time-study specialist has set the production rate for each worker on 14 Mar 2019, 07:13
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Bunuel
A time-study specialist has set the production rate for each worker on a certain job at 22 units every 3 hours. At this rate what is the minimum number of workers that should be put on the job if at least 90 units are to be produced per hour?

A. 5
B. 8
C. 12
D. 13
E. 30
Show more

The rate for each worker can be expressed as 22/7 units per hour. We can let n = the number of workers needed to produce 90 units per hour, and we have:

n(22/3) = 90

22n = 270

n = 270/22 = 12.2, so there must be at least 13 workers.

Answer: D
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A time-study specialist has set the production rate for each worker on 05 May 2025, 04:28
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