A and B together can do a piece of work in 10 days , but A alone can do the work in 15 days . How many days would B alone take to do the same work ?

Class 8 Question

By Sahil Dutta · Jan 04, 2020 ·Class 8
80 Answers
Aishna Jain answered Jan 04, 2020

Monika Riya answered Jan 05, 2020

Akshat Bhatt answered Jan 05, 2020

Jatin Grover answered Jan 29, 2020
30 days

Sarthak Singh answered Mar 09, 2020
B completes his work in 30 days

Boye Gbolahan answered Apr 17, 2020
15 days

Siddhant Kanchanwar answered May 03, 2020
1by30

Sudhanshu Yadav answered Jul 28, 2020
Given,
AB work together in=10 days
therefore, in 1 day they work =1/10part
A along can do same work in = 15 days
therefore, in 15 day A can work =1/15 part
hence B can do same work in=??
AB work =A+B
1/10 =1/15+B
1/10-1/15 =B
3-2/30 =B
1/30. =B
In 1 day B can do his work=1/30part
therefore B complete his work in 30 days

Shubham Gautam answered Apr 10, 2020
B do work in 30 days

Noor Mohammed answered May 09, 2020
A+B's complete work =10 ,there for A+B ,s complete in one day=1/10 ,A alone can do the in 1=1/15 , equitation 1/10+1/15=3-2/30 =1/30=30

Renu Gupta answered Jun 07, 2020
In 30 days
by solving it

Shoba Kumar answered Apr 02, 2020
B can finish his work in thirty days

Prince Kumar answered Jul 23, 2020
30 day is a correct answer

Guri Singh answered Jul 28, 2020
B can finish his work in 30 days or 1 month

Alok Kumar answered Feb 07, 2020
Answer is 30 days

Archana Rayban answered 3 days ago
B would take 30 days

Neha Sharma answered Apr 29, 2020
This writing is very dirty

Aditya Sharma answered Jun 26, 2020
B complete the work in 30 days =1 month

Kusum Lata answered May 13, 2020
Sol: A and B together work in 10 days

(A+B)'s one day work = 1/10 part

A's one day work = 1/15 part

work done by B in a day =
= 1/10- 1/15

= 3-2/30
= 1/30 part
Ans: Alone work done by B is 30 days

Shagufta Naz answered Aug 10, 2020
Plz do math in plain vopy

Tanishka Gupta answered May 03, 2020
30 days is required ans

Bibhuti Bhusan Prusty answered Apr 21, 2020
B can finish his work in 30 days

Ahad Ajam answered 2 weeks ago
B will complete the work in 30 days .

Tanmay Gupta answered May 29, 2020
B completes his work in 30 days.

Pranavkumar Khachar answered 4 weeks ago
0 days because the work has already done by A

Milkah Wambui answered May 03, 2020
B can complete his work in thirty days

Haasini Guntuka answered Mar 27, 2020
(a+b) 1 day = 1/10

a alone = 1/15

b =?
b= 1/10 - 1/15
b =1/10*3-1/15*3 (eqvivalent)
b = 3/30-2/30
b= 1/30
So,

b alone would take 30 days

Mantosh Singh answered May 20, 2020
B can finise his work in 30 days

Sayantika Dey answered May 15, 2020
What is parliament

Ananya Kumar answered Jul 23, 2020
(A+B) complete their work in 10 days
(A+B) 1 day's work = 1/10
A's 1 day work = 1/15
B's 1 day work = 1/10 - 1/15
»»» 1/10 × 3/3 = 3/30
1/15 × 2/2 = 2/30
››› 3-2/30 = 1/30
B completes his work in 30 days.

Darshana Pal answered Jun 27, 2020
25 days something

Madhu Rajput answered Aug 31, 2020
He do his work in 30 days

Ràtnàdèèp Ghàdgè answered 2 weeks ago
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Parv Sharma answered May 29, 2020
B complete its work in 30 I only take 5mins to solve it

Seema Rani answered Apr 29, 2020
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Kritika Jain answered Aug 24, 2020
(A+B+C)'s one days's work=
10
1


So (A+B+C)'s 4 day's work=
10
4

=
5
2


Remaining part of the work=1−
5
2

=
5
3



5
3

part of the work done by (B+C)= 10 days
∴ 1 work done by (B+C)=
5
3


10

=
3
50

Days
∴A alone work=
10
1


50
3

=
25
1


Hence A alone complete the work in 25 days.

Nithin Rakoti answered Jun 17, 2020
We can conclude the answer as 30days
B can do the work in 30 days

Anjali Gupta answered Feb 23, 2020
B complete his work in 30 days

Shlok Mishra answered Jul 31, 2020
A and B one day work= 1/10

A's one day work= 1/15

B's one day work= 1/10 - 1/15
= 3 - 2/30
= 1/30


# B can do that work in 30 Days.

Saanvitha Reddy answered Aug 18, 2020
n 10 days A + B can so = 1 work
In 1 day A+B can do = 1/10 work
In 15 days A can do = 1 work
In 1 day A can do = 1/15 work
Let in x days B can do = 1 work
so in 1day B can do 1/x work
In 1 day A+B can do = 1/10 work
1/15 + 1/x = 1/10
1/x = 1/10 - 1/15
1/x = 1/30
x = 30
Hence B can finish the work in 30 days

Prachi Sagar answered Aug 23, 2020
(A+B)Complete their work in 10 days.
(A+B)1 day's work =1/10
A's1 day work=1/15
3-2/30=1/30

B complete his work in 30 days

Rajiv Patel answered Jun 05, 2020
Kis subject ka

Rishu Raj answered Apr 14, 2020
B alone take the same work in 30days

Keerthi Reddy answered May 27, 2020
The answer is 30days

Aman Kumar answered Aug 23, 2020
A and B can do a piece of work in 10 days.

Therefore A and B together can do 1/10 of work in one day.

A + B = 1/10…Eq..1

A alone can complete this work in 15 days. Thus A alone can do this work in 1/15.

Substituting the value of work done by A in Eq..1

A + B = 1/10

1/15 + B = 1/10

B = 1/10 - 1/15

B = (3 - 2)/30

B = 1/30

Thus, B can accomplish 1/30 of work in one day.

Accordingly, B alone could complete this work in 30 days.

Answer B alone could complete this work in 30 days

Mayank Raj answered Aug 24, 2020
If A and B take 10 days to complete 1 work
so A and B take 1 day to complete 1/10 work
A alone take 15 days to complete 1 work
so A take 1 days to complete 1/15 work
so B take 1 day to complete 1/10-1/15=1/30
if 1/30 work B can do in 1 day
so 1 work complete in 1÷1/30=30 days

Om Bhrat answered Jul 25, 2020
Yes the answer is in 30 days

Love Soni answered May 21, 2020
9172127713 Whs me

Inder Singh answered Jul 25, 2020
Answer: B complete his work in 30 days

Shivansh Tiwari answered Jul 31, 2020
A and B together do the work in 10 days
it means A's+B's one day work = 1/10
given that A alone can do work in 15 days
it means A's one day work= 1/15
so B's one day work= 1/10 - 1/15 = 1/30
B's one day work=1/30
so time taken by B to complete whole work will be 30 days

Ummat Saikh answered Aug 25, 2020
Qr opening

Ganesh Yadav answered Jul 31, 2020
B will take 30 days to do the work .

Shilpa Jha answered 1 week ago
I think 5 days

Hake Akshay answered Mar 04, 2020
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