Directions: Read the following information to answer the question.
Explanation :
B's 1 day's work =1/12- 1/20
=2/60=1/30
Now, (A + B)'s 1 day's work =1/20+1/60
=4/60= 1/15
. [ B works for half day only ]
So, A and B together will complete the work in 15 days.
Directions: Read the following information to answer the question.
Explanation :
(A + B)'s 1 day's work = 1/11+1/20
=31/220
(A + C)'s 1 day's work = 1/11+1/55=6/55
Work done in 2 days =31/220+6/55
=55/220=1/4
Now,1/4
work is done by A in 2 days.
Whole work will be done in (2 x 4) = 8 days.
Directions: Read the following information to answer the question.
Explanation :
Suppose B takes x days to do the work.
A takes {2 x3/4}x=3x/2
days to do it.
(A + B)'s 1 day's work = 1/18
1/x=2/3x=1/18
or x = 30
Directions: Read the following information to answer the question.
Explanation :
(A + B + C)'s 1 day's work =1/24+1/6+1/12=7/24
So, A, B and C together will complete the job in 24/7days.
Directions: Read the following information to answer the question.
Explanation :
(A + B)'s 1 day's work = 1/72
(B + C)'s 1 day's work = 1/120
; (A + C)'s 1 day's work =1/90
Adding, we get: 2(A + B + C)’s 1 day’s work =1/72+1/120+1/90=12/360=1/30
(A + B + C)'s 1 day's work =1/60
So, A’s 1 day’s work =1/60-1/120 =1/120
A alone can do that work in 120 days.