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Numerical Ability
Time and Work
If 8 men and 6 boys can dig a well in 2 days, and 6 men and 2 boys can do it in 3 days, how long will 5 men and 3 boys take to do it?
a)4.33
b)4
c)3
d)3.33
Read Solution (Total 1)
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- Let 1 man's 1 day's work = x and 1 boy's 1 day's work = y.
so 8x+6y=1/2,& 6x+2y=1/3 on solving these two equation we get x=1/20 and y=1/60 days..5 men(x)+3 boy(y) 1 days work =(5/20+3/60)=3/10
so they will complete the work in 3.33 days..
- 11 years agoHelpfull: Yes(4) No(0)
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