L&T Company Numerical Ability Time and Work

6 men and 10 boys finish a piece of work in 6 days, 4 men and 12 boys do it in 7 days. The ratio between the efficiencies of a man and boy is?
A.2:1 B.4:3 C.3:2 D.3:1

Read Solution (Total 2)

(6M+10B)*6=7(4M+12B)
36M+60B=28M+84B
36M-28M=84B-60B
8M=24B
M=3B
M/B=3/1
M:B=3:1
3 years agoHelpfull: Yes(5) No(0)

(6m+10b)*=6(4m+12b)7
36m+60b=24m+84b
12m=24b
m/b=24/12
m:b=2:1
4 years agoHelpfull: Yes(0) No(5)

L&T Other Question

Two same glasses are respectively 2/3rd and 3/4th full of milk. They are then filled with water and the contents is mixed in a tumbler. The ratio of milk and water in the tumbler is?
A. 17:7 B 8:3 C. 21:11 D. 27:10 A student is to answer 11 out of 14 questions in an examination such that he must choose at least 4 from the first five questions. The number of choices available to him is
A)198 B)264 C)342 D)228