Aptitude - Time and Work - Discussion

Discussion Forum : Time and Work - General Questions (Q.No. 11)
11.
A can finish a work in 18 days and B can do the same work in 15 days. B worked for 10 days and left the job. In how many days, A alone can finish the remaining work?
5

5 1
2

6
8
Answer: Option
Explanation:

B's 10 day's work = ( 1 x 10 ) = 2 .
15 3

Remaining work = ( 1 - 2 ) = 1 .
3 3

Now, 1 work is done by A in 1 day.
18

Therefore 1 work is done by A in ( 18 x 1 ) = 6 days.
3 3

Discussion:
63 comments Page 4 of 7.

Ashok said:   9 years ago
Verification of answers:

B can do 10 days work in = 10/15.

A can do one day work = 1/18.

So we can verify the options like to became A+B = 1.

Given That,

B left the work after days so.

10/15+ x*1/18 = 1.

By verifying result: x = 6.

Moni said:   9 years ago
A can do a work in P days and B can do the same work in 2P days, A stop working after some days B alone complete the work in R days. How many days it takes to complete the work?

Can anyone solve this problem?

Swapna said:   9 years ago
Can anyone know the shortcut method to solve this problem?

Akshay silgari said:   9 years ago
I don't understand the logic of multiplying 18*1/3. Please help me in this.

Sowndarya said:   9 years ago
Simple & super @Arsh.

Tani said:   9 years ago
Two men can do a piece of work in 6 hours and 4 hours. After the first has worked for 2 hours he is joined by another man. By when should the work be completed?

Can anyone please solve this question. I am facing a lot of problem in this question. This is from composite mathematics. The answer at the back is 1 hour 36 minutes and I am getting 1 hour 33 Minutes.

Kamlesh said:   9 years ago
I did not understand the solution. Can someone please explain in step by step?

Shehnaz khatun said:   9 years ago
B + S can do 1 work in 8 days.
B alone can do 1 work in 12 days .

If B alone worked for 4 days and stopped to do. How long will S take to do the remaining work?

@ankushforbank said:   8 years ago
Rahman Sandeep and Abass can complete a work in 36, 42 and 48 days respectively. Rahman and Sandeep start the work after 6 days they take a leave for few days and handed the work to Abaas. Rahman and Sandeep leave ends 10 days before the work complete and Abass leaves the work on the return of Rahman and Sandeep. Find for how many days Abaas work?

Can anyone solve this time and work problem?

Ranjit said:   8 years ago
X/18 +10/15 =1.
X+12 = 18,
X = 18 - 12,
= 6 days.


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