Latest Infosys Aptitude Question SOLUTION: 3 men finish painting a wall in 8 days. Four boys do the same job in 7 days. In how many days will 2 men and 2 boys working together paint two such walls of the same size? a) 6 6

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3 men finish painting a wall in 8 days. Four boys do the same job in 7 days. In how many days will 2 men and 2 boys working together paint two such walls of the same size?

a) 6 6/13 days

b) 3 3/13 days

c) 9 2/5 days

d) 12 12/13 days

Asked In Infosys (12 years ago)

Unsolved Read Solution (4)

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Read Solution (4) :

priyanka  (6 years ago)

1 man's 1 day work=1/24
1 boy's 1 day work=1/28
2 men's 1 day work=(1/24)*2=1/12
2 boys 's 1 day work = (1/28)*2=1/14
2 men and 2 boys work together=1/12+1/14
=(7+6)/84
=13/84
no of days taken by 2 men and 2 boys=84/13
6 6/13
Option (a) is the ans

Is this solution Helpfull? Yes (9) | No (1)  

HARIHARAN S  (10 years ago)

3men 8days -->1 man=1/24 days(1/3*1/8)
4boys 7days-->1 boy=1/28 days
2men+2boys==2/24+2/28-->1/12+1/14
2 such walls-->1/24+1/28
take LCM, 13/168
reciprocal of it, 168/13
i.e,12 12/13

Is this solution Helpfull? Yes (5) | No (10)  

Triveni Morthala  (4 years ago)

For one wall ans is 6 6/13,but they asked to find it for two such walls.so,ans is 12 12/13

Is this solution Helpfull? Yes (1) | No   

anusha Baddam  (4 years ago)

1 man's 1 day work=1/24
1 boy's 1 day work=1/28
2 men's 1 day work=(1/24)*2=1/12
2 boys 's 1 day work = (1/28)*2=1/14
2 men and 2 boys work together=1/12+1/14
=(7+6)/84
=13/84
no of days taken by 2 men and 2 boys=84/13
6 6/13
Option (a) is the ans

Is this solution Helpfull? Yes | No (1)  

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