Question

if aman and Sumit can do a job in 2 days Sumit and Kashish can do it in 4 days and aman and Kashish can do it in 12/5 days then find the number of days in which aman can do this job alone

Answer 1

Hope it helps you.....

Answer 2

Amar alone can work for 3 days

Step-by-step explanation:

Given:

If aman and Sumit can do a job in 2 days Sumit and Kashish can do it in 4 days and aman and Kashish can do it in $\frac{12}{5}$ days.

Then find the number of days in which aman can do this job alone.

Solution:

Let amar be a, sumit be s and kashish be k

a + s = $\frac{1}{2}$ ..(1)

s + k = $\frac{1}{4}$ …(2)

a + k = $\frac{5}{12}$ …(3)

Adding RHS of 1,2 and 3,

Total parts = $\frac{1}{2} +\frac{1}{4} + \frac{5}{12} = \frac{7}{6}$

2 (a + s + k) = $\frac{7}{6}$

A + s + k =$\frac{7}{12}$

A = $\frac{7}{12} - \frac{1}{4} = \frac{1}{3}$

Amar alone can work for 3 days

To know more:

A can finish a job alone in 42 days and C can do the same in 35 days. A and B both work on the project for 5 days, after which B leaves for vacation. A works for a day alone, after which C joins him and they both work together on the project for 8 days, after which A leaves for vacation. C works on the project alone for a day, after which B returns and both B and C together finish the project in 5 days. How long will it take for B to finish the project alone?

https://brainly.in/question/11825193

A can do a job alone in 24 days. B is 50% more efficient than A. Then B alone can finish the job in

A) 12 days

B) 18 days

C) 10 days

D) 16 days

https://brainly.in/question/5182877