Question

If Yash works alone he would take 4 days more to complete the job done
and Kush worked together. If Kush works alone, he would take 9 times more
the job than they work together
. How many days would they take to come
work if both of them worked together?

Answer 1

Answer:

36 days you have two options one unitary method and direct inverse varation

Step-by-step explanation:

please mark as BRAILLENEST

Answer 2

Answer:

number of days taken by Yash and Kush to complete the work, if they worked together is 6 days

Step-by-step explanation:

Let time taken by both of them to work together be 'x' days

Then, time taken by Yash to work alone = (x+4) days

and, time taken by kush to work alone = (x+9) days

To find: number of days taken by Yash and Kush to complete the work, if they worked together

$\frac{1}{x+4}+\frac{1}{x+9}=\frac{1}{x\\}\\ \frac{2x+13}{x^{2} +13x+36}= \frac{1}{x}$

2x²+ 13x = x² +13x + 36

x² = 36

x = 6

Therefore, number of days taken by Yash and Kush to complete the work, if they worked together is 6 days