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Jahir working on a project. He started the work and after working 2 days he left that project. Then Kailash started working on that project and finished the work in 9 days. If Jahir left that project after working 3 days, and Kailash finished the remaining project in 6 days, then in how many days Jahir and Kailash can finish the project while working alone?

Jahir working on a project. He started the work and after working 2 days he left that project. Then Kailash started working on that project and finished the work in 9 days. If Jahir left that project after working 3 days, and Kailash finished the remaining project in 6 days, then in how many days Jahir and Kailash can finish the project while working alone? Correct Answer 5 days, 15 days

Let's suppose total work = 1 unit

Let's assume Jahir and Kailash do A part and B part of work in one day while working alone.

According to the 1st condition;

2A + 9B = 1      ----(1)

Similarly;

3A + 6B = 1      ---- (2)

From Equation (1) and (2) we will get; A = 1/5 and B = 1/15

Therefore, Jahir and Kailash will take 5 and 15 days respectively to finish the work while working alone.

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