A company has two large computers. The slower computer can send all the company’s email in
40
minutes. The faster computer can complete the same job in
10
minutes. If both computers are working together, how long will it take them to do the job?

Question

A company has two large computers. The slower computer can send all the company’s email in 
40
minutes. The faster computer can complete the same job in 
10
 minutes. If both computers are working together, how long will it take them to do the job?

aum · Answer

$$
\frac 1x = \frac{1}{40} + \frac{1}{10}
$$where x is the time it takes in minutes of both computers are working together.  Solve for x.

aum · Answer

*if*