A company has two large computers. The slower computer can send all the company's email in 55 minutes. The faster computer can c

Question

Mazyrski [523]

3 years ago

13

A company has two large computers. The slower computer can send all the company's email in 55 minutes. The faster computer can c

omplete the same job in45 minutes. If both computers are working together, how long will it take them to do the job?

Mathematics

1 answer:

adelina 88 [10] · Answer 1 · 2021-12-04T04:52:04+03:00

You find the rates of each computer on its own...

One does the job in 55 minutes which we can say is 1/55

The other has a rate of 1/45.

The question wants to know how long it would take both working simultaneously to complete the job...

t/55+t/45=1

(9t+11t)/495=1

20t=495

t=24.75 minutes (24:15)