Question

How long will it take a carpenter to cut a 4 in. by 4 in. by 8 ft. piece of treated lumber into fou pieces if each cut takes 15 seconds?

Answer 1

It will take 45 seconds a carpenter to cut a 4 in. by 4 in. by 8 ft. piece of treated lumber into four pieces .

Explanation:

Given :Each cut takes 15 seconds.

To Find :How long will it take a carpenter to cut a 4 in. by 4 in. by 8 ft. piece of treated lumber into four pieces ?

Solution:

To divide 1 piece into two pieces we need to make 1 cut

To Divide 1 piece into 3 pieces we need to make 2 cut

So, To divide the 1 piece in n pieces we need to make n-1 cuts

Now we are given that Carpenter is dividing the piece into 4 pieces

So, Number of cuts need to be drawn = n-1 = 4-1 = 3

1 cut takes time = 15 seconds

So, 3 cut takes time =
`15 * 3 = 45`

Hence it will take 45 seconds a carpenter to cut a 4 in. by 4 in. by 8 ft. piece of treated lumber into four pieces .