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QOTD#30 Jenny’s factory produces gear shafts at the rate of
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31 May 2017, 06:40
31 May 2017, 06:40
Expert Reply
00:00
Question Stats:
80% (00:59) correct
20% (00:59) wrong based on 15 sessions
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Jenny’s factory produces gear shafts at the rate of 250 gear shafts per hour. She finds that she is short 3000 gear shafts on an order that must be completed in the next 10 hours. By what percent must Jenny increase her rate of production, in gear shafts per hour, in order to
complete the order on time?
complete the order on time?
Drill 2
Question: 7
Page: 341/342
Question: 7
Page: 341/342
Show: :: OA
20
Re: QOTD#30 Jenny’s factory produces gear shafts at the rate of
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04 Jun 2017, 15:39
04 Jun 2017, 15:39
Expert Reply
Explanation
Jenny must complete 3000 gear shafts in 10 hours, which is a rate of 300 gear shafts per hour.
Percent change is \(\frac{difference}{original} \times 100\). In this case, the difference is 50 and the original
is 250, so the percent change is \(\frac{50}{250} \times 100\).
The question asks for percent increase, so be sure to enter 20, and not 0.2.
Hence answer is 20.
Jenny must complete 3000 gear shafts in 10 hours, which is a rate of 300 gear shafts per hour.
Percent change is \(\frac{difference}{original} \times 100\). In this case, the difference is 50 and the original
is 250, so the percent change is \(\frac{50}{250} \times 100\).
The question asks for percent increase, so be sure to enter 20, and not 0.2.
Hence answer is 20.
gmatclubot
Re: QOTD#30 Jenny’s factory produces gear shafts at the rate of [#permalink]
04 Jun 2017, 15:39
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