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A certain plastic cup is manufactured by a robot. If 5 such
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18 Sep 2018, 04:24
18 Sep 2018, 04:24
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Question Stats:
64% (01:12) correct
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A certain plastic cup is manufactured by a robot. If 5 such robots, working at the same individual rate, can manufacture a combined total of 5 cups in 5 seconds, how many seconds will it take 25 robots to manufacture a total of 25 cups?
A) 25
B) 20
C) 15
D) 10
E) 5
A) 25
B) 20
C) 15
D) 10
E) 5
Re: A certain plastic cup is manufactured by a robot. If 5 such
[#permalink]
19 Sep 2018, 03:24
19 Sep 2018, 03:24
2
Since 5 Roberts can manufacture 5 cups in 5 seconds.
It must be that 25 Roberts should be able to manufacture 5 cups in 1 second.
Because as Roberts increase time taken to manufacture same number of cups decreases.
However we are required to find the time taken for 25 cups which is 5 times the original amount therefore it will take 5*1 sec = 5 seconds.
_________________
It must be that 25 Roberts should be able to manufacture 5 cups in 1 second.
Because as Roberts increase time taken to manufacture same number of cups decreases.
However we are required to find the time taken for 25 cups which is 5 times the original amount therefore it will take 5*1 sec = 5 seconds.
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Re: A certain plastic cup is manufactured by a robot. If 5 such
[#permalink]
19 Sep 2018, 05:19
19 Sep 2018, 05:19
1
Think of it this was.
it takes 5 machines 5 second to make 5 cups, so their individual work rate must be 1 cup/5 sec (work= rate*time)
now they asked how much time will 25 robot take for 25 cups. we know the each robot makes 1 cup/5 sec. so it should take them 5 sec to make 25 cups.
it takes 5 machines 5 second to make 5 cups, so their individual work rate must be 1 cup/5 sec (work= rate*time)
now they asked how much time will 25 robot take for 25 cups. we know the each robot makes 1 cup/5 sec. so it should take them 5 sec to make 25 cups.
Re: A certain plastic cup is manufactured by a robot. If 5 such
[#permalink]
31 Jul 2021, 02:59
31 Jul 2021, 02:59
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