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

Aishna Jain
Jan 04, 2020

Monika Riya
Jan 05, 2020

Akshat Bhatt
Jan 05, 2020

Jatin Grover
Jan 29, 2020
30 days

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

Boye Gbolahan
Apr 17, 2020
15 days

1by30

Sudhanshu Yadav
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

Noor Mohammed
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
Jun 07, 2020
In 30 days
by solving it

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

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

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

Neha Sharma
Apr 29, 2020
This writing is very dirty

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

Kusum Lata
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
Aug 10, 2020
Plz do math in plain vopy

Tanishka Gupta
May 03, 2020
30 days is required ans

B can finish his work in 30 days

Kiran Varma
Nov 19, 2020
30 days is the answer

Ahad Ajam
Sep 19, 2020
B will complete the work in 30 days .

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

0 days because the work has already done by A

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

Haasini Guntuka
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
May 20, 2020
B can finise his work in 30 days

Sayantika Dey
May 15, 2020
What is parliament

Ananya Kumar
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.

Https://edurev.page.link/aGpXx9ipCTDtFhkw7

Suryakanta Singh
Oct 26, 2020
B takes 30 days to do the work

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

Kritika Jain
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.

Parv Sharma
May 29, 2020
B complete its work in 30 I only take 5mins to solve it

Seema Rani
Apr 29, 2020
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Nithin Rakoti
Jun 17, 2020
We can conclude the answer as 30days
B can do the work in 30 days

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

Prachi Sagar
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

Saanvitha Reddy
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

Shlok Mishra
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.

B will complete it in 30 days

Aman Kumar
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
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

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

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

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

Shivansh Tiwari
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

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

Hake Akshay
Mar 04, 2020
How many balls are used in a cricket match

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