 Time and Work Problems with tricks for SBI PO, IBPS PO, NIACL, NICl, LIC, Dena Bank PO PGDBF, BOI, Bank of Baroda and other competitive exams
- A and B can do a piece of work in 25 days. B and C can do the same piece of work in 30 days. C and A can do the same work in 37.5 days. In how many days will A alone do the same work?
A) 100 days
B) 60 days
C) 50 days
D) 75 days
E) None of these
- A and B started a work together and after 7 days A left the work and B did the remaining work in 56 days. Then find in how many days A alone can do the same work if A and B together can do the work in 21 days.
A) 30 days
B) 27 days
C) 28 days
D) 29 days
E) None of these
- 12 men can do a work in X days and 18 women can do the same work in (X+2) days. If the ratio of 18 men and 36 women work in same time is 9:10 then find the value of X
A) 10 days
B) 12 days
C) 18 days
D) 15 days
E) None of these
- Ram and Shyam can complete an assignment of data entry in 6 days. If Ram is 60% of Shyam’s speed and the total key depression in the assignment are 96000, What is Ram’s speed in key depression per hour if they work for 10 hour daily?
A) 300
B) 600
C) 400
D) 1000
E) None of these
- If 32 men and 24 women can do a work in 2 days and 13 men and 18 women can do the same work in 4 days then find in how many days will 11 men do the work?
A) 16 days
B) 8 days
C) 4 days
D) 12 days
E) None of these
- 2 men or 4 women or 6 boys can do a work in 22 days. Find in how many days will 1 men, 1 women and 1 boy together can do the work?
A) 22 days
B) 12 days
C) 24 days
D) Cannot be determined
E) None of these
- A is 50% more efficient than B. If A can do a work in 30 days, then find in how many will C do the work if C is 20% efficient of A and B together?
A) 15 days
B) 30 days
C) 20 days
D) 10 days
E) None of these
- A contract is given to 40 person to do a work in 45 days. After 25 days it is found that only half work is done, then find how many more persons are required to complete the work on time?
A) 10
B) 15
C) 20
D) 8
E) None of these
- A pipe can fill a cistern in 140 mins and B pipe can fill it in 105 mins. They are opened together but due to a leakage they take 10 min more to fill the tank. Find in how many minutes will leakage empty the tank?
A) 240 mins
B) 360 mins
C) 420 mins
D) 210 mins
E) None of these
- In a tank theer are 3 inlet pipes A,B and C. A can fill the tank 1.5 times faster than B. B can fill the tank in half time taken by C and tank C is 3 times less efficient as A.There is one outlet pipe D which can empty the tank in 10 mins and the time taken by D is half of the time taken by A. Find in how much time will A and B together fill the tank?
A) 12 mins
B) 15 mins
C) 10 mins
D) 20 mins
E) None of these
mam 7th question ka answer 90 days aayega plz check kariye
Frds…
……A…..B
Eff.2….3
W..3…2
A work 30 means B work 20days
Now
…A+B…..C
EF..5..6
Wk.. 6..5
Hence
A+B=12
C=10 days
bhai A 50% jyda efficient hai to B se kam din work karega to B ka 20 days kaise?
A=30 days
B 45 days
apka ans galata hai
Bro
2:3 eff hair work inversely proportional hoga
3:2
yep it will proportional
then B should take 45 days to complete the whole work
but you have taken 20 days for B
hn bhai u r right…
c=6 kha se aya
7/10 ty
Question no 3 explain pls..
Use this
18 men’s 1 day work is 9
Then
1 man’s 1 day work = 9/18
M1 × W2 = M2 × W1
W2 = 9/18
ty..
thanku mam 🙂
Ma’am ques-6 mein 24 4/31 hon chahie
ma’am qus 7 bhi galat hai
B ka 45 days hoga na ki 20 days kyun ki A jyda efficient hai b se
Yes B ka 45
plzz xplain 7 ques how C= 1=10
A+B = 5
C = 20% of A+B = 1/5 of A+B
So S = 1/5 * 5 = 1
no need to take 1 = 10 step here, given by mistake
A : B = 3 : 2
now C = 1
A : B : C = 3 : 2 : 1
eff A = 3
time taken by A = 30 days
total work = 90
eff of C = 1
C takes 90 days …………. how 10 days maam ?
A is 50% more efficient than B. If A can
do a work in 30 days, then find in how many will C do the work if C is
20% efficient of A and B together?
A) 15 days
B) 30 days
C) 20 days
D) 10 days
E) None of these
wordings bahut confusing ho rha maam
6th ka 24 hi hai
2 men in 22 days. So 1 in 44 days
1 w in 88 days
1 b in 132 days
Required ans = 1/22 + 1/88 + 1/132 = 11/264 = 1/24
24 days
haan right
mujhse typo* ho gayi thi to 24 somthing aa rha tha
mam q7 ka ans 15 hoga
thank u mam 🙂
ty:)
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