Latest Elitmus Aptitude Question SOLUTION: if A and B both work for 6 hrs,B and C work for 7.5 hrs,C and A work for 10 hrs . i dont remember but ......its arrange in increasing order by their work a)cab b)cba c)abc d)non

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(#M40155955) ELITMUS Numerical Ability question Keep an EYE

if A and B both work for 6 hrs,B and C work for 7.5 hrs,C and A work for 10 hrs .
i dont remember but ......its arrange in increasing order by their work

a)cab
b)cba
c)abc
d)none of these

Asked In Elitmus lokendra yadav (8 years ago)

Solved himaan Read Solution (10)

Is this Puzzle helpful?   (11)   (7) Submit Your Solution Time and Work

Read Solution (10) :

gaurav singh  (8 years ago)

A and B both can finish the work in 6 days means
1/A+1/B=1/6 ................(i)
B and C both can finish the work in 7.5 days means
1/B+1/C=1/7.5 ...................(ii)
C and A both can finish the work in 10 days means
1/A+1/B=1/10 ........................(iii)
Adding (i),(ii) and (iii), we get
2(1/A+1/B+1/C)=2/5 ......................(iv)
from (i) we have 1/A+1/B=1/6 put in (iv) ,we wiil get
1/6+1/C=1/5
C=30
Similarly, we will get A=15 and B=10
so in increasing order it will be BAC

Is this solution Helpfull? Yes (36) | No (7)  

himaan  (8 years ago) Best Solution

Answer is D as it was asked arrange in increasing order of time taken so maximum time taken was by c
then a and then b so answer should have been bac

Is this solution Helpfull? Yes (15) | No (4)  

tanumay ghosh  (8 years ago)

Cab is the answer

Is this solution Helpfull? Yes (2) | No (3)  

Deepak Pandey  (8 years ago)

d)none of these

Is this solution Helpfull? Yes (1) | No (2)  

vishwa  (8 years ago)

BAC is there in options

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AMEER ALI KHAN  (7 years ago)

how come himaan is best solution
gaurav singh solved it with proper explanation

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susmita debdas  (7 years ago)

a+b=6....(1); b+c=7.5....(2); c+a=10....(3);
so,2(a+b+c)=23.5; a+b+c=11.75.....(4);
equation 4-1,we get c=5.75; equation 4-2,we get a=4.25; equation 4-3,we get b=1.75
so,arrange in increasing order by their work is bac

Is this solution Helpfull? Yes (1) | No (1)  

Ashishkumar Satappa Bhosale  (7 years ago)

quetion is to arrange in incresing order by work , not by time they taken.
So the work of b is more than a and work of a is more than c.
so ans should be a) cab

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rajat bhawsar  (7 years ago)

ans is cab

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vikalp pandit  (6 years ago)

ans-> none of this
BAC is the correct order

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