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Working alone, Navid can mow
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29 Jun 2020, 05:25
29 Jun 2020, 05:25
Expert Reply
00:00
Question Stats:
86% (00:53) correct
13% (00:59) wrong based on 96 sessions
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Working alone, Navid can mow a field in two hours, Erin can mow it in three hours, Janey can do it in four hours, and Steven can do it in 12 hours.
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Quantity A |
Quantity B |
The number of hours it takes Navid and Steven working together to mow the field |
The number of hours it takes Erin and Janey working together to mow the field |
A)The quantity in Column A is greater.
B)The quantity in Column B is greater.
C)The two quantities are equal.
D)The relationship cannot be determined from the information given.
Re: Working alone, Navid can mow
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29 Jun 2020, 05:26
29 Jun 2020, 05:26
Expert Reply
Post A Detailed Correct Solution For The Above Questions And Get A Kudos.
Question From Our New Project: GRE Quant Challenge Questions Daily - NEW EDITION!
Question From Our New Project: GRE Quant Challenge Questions Daily - NEW EDITION!
Re: Working alone, Navid can mow
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29 Jun 2020, 07:15
29 Jun 2020, 07:15
2
The easiest way to this sum is by using LCM. The number of hours used by Navid, eric, Janey, and steven is 2, 3, 4 and 12 hours resp. Thus, the LCM is 12, dividing 12 by no. of hours taken by each of them to complete the work ie. 12/2; 12/3; 12/4; 12/12 which gives us the number of units each individual can do in one hour which is 6, 4, 3, and 1.
Case A: Navid+Steven= 6+1= 7 units. Thus, to do 12 units will take 12/7 hours
Case B: Eric+Janey= 3+4=7 units. Thus, to do 12 units it will take 12/7 hours
Hence A=B.
Answer C
Case A: Navid+Steven= 6+1= 7 units. Thus, to do 12 units will take 12/7 hours
Case B: Eric+Janey= 3+4=7 units. Thus, to do 12 units it will take 12/7 hours
Hence A=B.
Answer C
