A company has two large computers. The slower computer can send all the company's email in 35 minutes. The faster computer can c

Question

3 years ago

5

omplete the same job in 15 minutes. If both computers are working together, how long will it take them to do the job

1 answer:

Naddik [55] · Answer 1 · 2022-08-09T05:27:30+03:00

4 0

The rate for the first is 1 job / 35 minutes and for the second is 1 job / 15 minutes. So combined we get

r = 1/35 + 1/15

3×5×7r = 3 + 7 = 10

r = 10/(105) jobs per minute

We're interested in 1/r

1/r = 105/10 = 10.5 minutes per job

Answer: 10.5 minutes