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?

Respuesta :

x = 40 min 
y = 10 min 

x = 40/60 h --> x = 4/6 h --> x = 2/3 h
y = 10/60 h --> y = 1/6 h
x + y = 2/3 - 1/6 
x+y = 4/6 - 1/6
x+y = 3/6 h = 3*60'/6 = 3*10 = 30 min

If both computers are working together, they will take 8 minutes to complete the job.

What is a fraction?

Fraction number consists of two parts, one is the top of the fraction number which is called the numerator and the second is the bottom of the fraction number which is called the denominator.

We have:

The slower computer can send all the company's email in 40 minutes. The faster computer can complete the same job in 10 minutes.

Slower computer can complete the 1/40 task per minute

Faster computer can complete the 1/10 task per minute

Together, they complete part of work = 1/40  + 1/10 = (1+4)/40 = 5/40

= 1/8

Time they take = 8 minutes

Thus, if both computers are working together they will take 8 minutes to complete the job.

Learn more about the fraction here:

brainly.com/question/1301963

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