Question

Lea can wax a floor in 14 minutes. Mark can wax the same floor in 16 minutes. How long would it take them if they worked together? can clean the same attic in 9 hours. Find can revarnish a pipe

Answer 1

Answer:

It would take them 7.4682 minutes to wax the floor together.

Step-by-step explanation:

First, we need to find out the minute rate for each of them.

If Lea can wax a floor in 14 minutes, then he waxes 1/14 of the floor per minute.

If Mark can wax the same floor in 16 minutes, then he waxes 1/16 of the floor per minute.

Working together, they would wax 1/14 + 1/16 of the floor per minute.

1/14 + 1/16 = .0714 + .0625 = .1339 of the floor per minute

Now we can use a rule of three

1 minute -------.1339

x minutes ------1

Then,

x = 1 / 0.1339 = 7.4682

Therefore, it would take them 7.4682 minutes to wax the floor together.