If 9 men working 6 hours a day can do a work in 88 days, then 6 men working 8 hours aday can do it in how many days?

 We can start by using the formula:

(workers × hours × days) / amount of work = 1

Let's call the amount of work that needs to be done "W". Then we can write:

(9 × 6 × 88) / W = 1

Solving for W, we get:

W = (9 × 6 × 88)

W = 4752

So the total amount of work that needs to be done is 4752.

Now, let's use the same formula to find how many days it would take 6 men working 8 hours a day to do the same amount of work:

(6 × 8 × d) / 4752 = 1

Solving for d, we get:

d = (4752 / (6 × 8))

d = 99

Therefore, 6 men working 8 hours a day can do the same amount of work in 99 days.