Take a note while surfing.
Give your Note a Colorful Tag.
Stay on same information and in Sync wherever you are.
Organize your information,It may take Shape.
Differ your Content by Color.
Easy to pull up your content from anywhere anytime.
Don't Let information to miss,Because it take shape
Simple an Easy Way to take a note.
Get the same in next visit.
61. A can do a work in 6 days , B can do a work in 8 days and C can do it in 12 days. B left work after 6 days. For how many number of days should A and C should work together to complete the remaining work ?
Answer: Option A
Explanation:A complete work in 6 days
B complete work in 8days
C complete work in 12 days
B's 1 day work=1/8
6 day's work=6/8
remaining work=1-6/8=2/8=1/4
A+C 1 day work together = 1/6+1/12=1/4
so A and C work 1 day to complete remaining work
Workspace
IBM
62. A and B together can complete a work in 12 days. A alone can complete it in 20 days. If B does the work only for half a day daily, then in how many days A and B together will complete the work?
Answer: Option C
Explanation:Here is no explanation for this answer
Workspace
IBM
63. 10 women can complete a work in 7 days and 10 children take 14 days to complete the work. How many days will 5 women and 10 children take to complete the work?
Answer: Option D
Explanation:5 women's 1 day work=1/14
ans= 1/14 + 1/14
= 1/7 units of work
so 7 days
Workspace
IBM
64. A and B can together finish a work 30 days. They worked together for 20 days and then B left. After another 20 days, A finished the remaining work. In how many days A alone can finish the work?
Answer: Option D
Explanation:(A + B)'s 20 day's work = ( 1/30 x 20 ) = 2/3 .
Remaining work = ( 1 - 2/3 ) = 1/3
Now, 1/3 work is done by A in 20 days.
Therefore, the whole work will be done by A in (20 x 3) = 60 days.
Workspace
Tech Mahindra
65. Sixteen men can complete a work in twelve days. Twenty four children can complete the same work in 18 days. 12 men and 8 children started working and after eight days three more children joined them. How many days will they now take to complete the remaining work?
Answer: Option B
Explanation:Lets assume Men as "M" and children as "C" .
So as per the Question
16M*12 = 24C*18
=> M/C=9/4
Total work= 16*9*12
Lets assume days required to complete remaining work = x days.
(12*9+8*4)*8+(12*9+11*4)*x=16*9*12
x=608//152 = 4 days.
Workspace
Wipro
66. A can do a certain work in 12 days. B is 60% more efficient than A. How many days does B alone take to do the same job?
Answer: Option B
Explanation:A=100% work one day(1 work)
B=160% work one day(1.6 work)
So 12/1.6 = 7.5 days.
Workspace
Wipro
67. One man, 3 women and 4 boys can do a piece of work in 96 hours, 2 men and 8 boys can do it in 80 hours, 2 men & 3 women can do it in 120 hours. 5 Men & 12 boys can do it in how many hours?
Answer: Option C
Explanation:Lets assume man, women and boy as M, W, B respectively.
So, m+3W+4B=1/96 ------- (1)
2M+8B=1/80 -------- (2)
2M+3W=1/120 ---------(3)
By solving above eq.
4M+16B=1/40 4
eq(3)+eq(4)
5M+12B+(M+3W+4B) = 1/40+1/120
5M+12B=11/480 = 43 7/11 hrs.
Workspace
Wipro
68. A does 4/5 of work in 20 days. He then calls in B and they together finish the remaining work in 3 days. How long B alone would take to do the whole work?
Answer: Option B
Explanation:A can do 4/5th works in 20 days.
so he can do the whole work in 20*(5/4) =25 days.
remaining work after done 4/5 by A is=1-(4/5)=1/5
(A+B) can do the 1/5th work in 3 days.
means the can do the whole work in (3*5)=15 days.
so,(A+B)'s 1 days work=1/15
B's 1 day's work {(1/15)-(1/25)}=2/75
so B can alone do the whole work in 75/2,means in 37 1/2 days.
Workspace
Wipro
69. 2 men and 3 boys can do a piece of work in 10 days while 3 men and 2 boys can do the same work in 8 days. In how many days can 2 men and 1. boy do the work? .
Answer: Option C
Explanation:If 1 day work of a man=m and a boy=b, then
2m + 3b =1/10 ----(i) and
3m + 2b =1/8 ----(ii)
On solving (i) and (ii), m=7/200, b=1/100
So 2 men and 1 boy's 1 day work= (2*7/200)+(1/100)=8/100=2/25
Hence they can complete the work in 25/2=12.5 days
Workspace
Wipro
70. A and B undertake to do a piece of work for Rs. 600. A alone can- do it in 6 days while B alone can do it in 8 days. With the help of C, they finish it in 3 days. Find the share of each.
Answer: Option B
Explanation:C's 1 day's work=1/3 - (1/6 + 1/8)
A:B:C = Ratio of their 1 day's work = 1/6 : 1/8 : 1/24= 4:3:1 (by taking LCM)
therefore,
A's Share = Rs.(600* 4/8) = Rs.300
B's Share = Rs.(600* 3/8) = Rs.225
C's Share = Rs.[600 - (300 + 225)] = Rs.75
Workspace
Wipro