Question

It takes Adam 15 hours to install a new deck. Jack can install the same deck in 10 hours. How long would it take them if they worked together?

Answer 1

Answer:

in five (5) hours

Step-by-step explanation:

it will 15 - 10 it be answer

Answer 2

Answer:

Adam and Jack will take 6 hours to install the same deck.

Step-by-step explanation:

In the given question it has been given that Adam installs a new deck in 15 hours.

Similarly Jack installs the same deck in 10 hours.  

Per hour work done by Adam = $\frac{1}{15}$

And per hour work done by Jack = $\frac{1}{10}$

If Jack and Adam work together then per hour work done by both = $\frac{1}{10}+\frac{1}{15}$

= $\frac{3+2}{30}$

= $\frac{5}{30}$

= $\frac{1}{6}$

And total time taken to complete the whole work = $\frac{1}{\frac{1}{6}}$

= 6 hours

Therefore, if Jack and Adam work together they will take 6 hours to install the deck.

Learn more from the  questions on time and work from https://brainly.in/question/214694