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08 Feb 2018, 23:32
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D
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
5%
(low)
Question Stats:
97% (00:35) correct
3%
(00:41)
wrong
based on 550
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If a certain machine produces bolts at a constant rate, how many seconds will it take the machine to produce 300 bolts?
(1) It takes the machine 56 seconds to produce 40 bolts.
(2) It takes the machine 1.4 seconds to produce 1 bolt.
ID 12028
(1) It takes the machine 56 seconds to produce 40 bolts.
(2) It takes the machine 1.4 seconds to produce 1 bolt.
ID 12028
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09 Feb 2018, 00:18
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The takeaway from the question stem is that the machine produces bolts at a constant rate
(1) It takes the machine 56 seconds to produce 40 bolts.
This translates to saying that the machine take \(\frac{56}{40} = 1.4\) seconds to product one bolt.
With the time taken to product one bolt, we can tell the total time taken for the machine
to produce 300 bolts (Sufficient)
(2) It takes the machine 1.4 seconds to produce 1 bolt.
With the time taken to product one bolt, we can tell the total time taken for the machine
to produce 300 bolts (Sufficient - Option D)
(1) It takes the machine 56 seconds to produce 40 bolts.
This translates to saying that the machine take \(\frac{56}{40} = 1.4\) seconds to product one bolt.
With the time taken to product one bolt, we can tell the total time taken for the machine
to produce 300 bolts (Sufficient)
(2) It takes the machine 1.4 seconds to produce 1 bolt.
With the time taken to product one bolt, we can tell the total time taken for the machine
to produce 300 bolts (Sufficient - Option D)
10 Feb 2018, 00:03
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Bunuel
straight away D as from statement 1. we can know that certain rate and then divide 300 by that rate.
and in statement 2 we got rate 10/14 and divide 300 by 10/14. so both statement is sufficient. OA please
