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# It takes 10 type A machines 3 days to complete a task when they

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Joined: 11 Jul 2016
Posts: 50
Location: India
Concentration: Technology, General Management
GMAT 1: 550 Q36 V30
GPA: 3.65
WE: Information Technology (Consulting)
It takes 10 type A machines 3 days to complete a task when they  [#permalink]

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Updated on: 22 Oct 2017, 11:52
1
1
00:00

Difficulty:

15% (low)

Question Stats:

84% (01:20) correct 16% (01:55) wrong based on 60 sessions

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It takes 10 type A machines 3 days to complete a task when they are operated 12 hours a day. How long will it take 8 Type B machines to complete the same task when they are operated 8 hours a day?

1.Type B machines are 20% less efficient than Type A machines
2.Type B machines take 25% longer to complete the same task than Type A machines

Originally posted by Sangeeta2018 on 22 Oct 2017, 11:39.
Last edited by Sangeeta2018 on 22 Oct 2017, 11:52, edited 1 time in total.
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Joined: 25 Feb 2013
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Location: India
GPA: 3.82
Re: It takes 10 type A machines 3 days to complete a task when they  [#permalink]

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22 Oct 2017, 11:50
1
Sangeeta2018 wrote:
It takes 10 type A machines 3 days to complete a task when they are operated 12 hours a day. How long will it take 8 Type B machines to complete the same task when they are operated 8 hours a day?

1. Type B machines are 20% less efficient than Type A machines
2.Type B machines take 25% longer to complete the same task than Type A machines

The number of Type B machines and hours per day is given. To calculate total number of days required, we need a relationship between efficiency of Type A and Type B machine.

Statement 1: Directly Provides the relationship between the efficiency of Type A & Type B machines. Hence Sufficient

Statement 2: Again relationship between efficiency of Type A and Type B machine is provided. Hence Sufficient

Option D
Re: It takes 10 type A machines 3 days to complete a task when they &nbs [#permalink] 22 Oct 2017, 11:50
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