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Ivanshal [37]
2 years ago
12

working together it takes two computers 10 minutes to send out a company's email. If it takes the slower computer 30 minutes to

do the job on its own, how long will it take the faster computer to do the job on its own?
Mathematics
1 answer:
allochka39001 [22]2 years ago
5 0

Answer: it will take the faster computer 15 minutes to do the job on its own.

Step-by-step explanation:

Let t represent the number of minutes it will take the faster computer to do the job on its own. It means that the rate at which it does the job per minute is 1/t

If it takes the slower computer 30 minutes to do the job on its own. It means that the rate at which it does the job on its own per minute is 1/30

By working together, they would work simultaneously and their individual rates are additive. Working together it takes two computers 10 minutes to send out a company's email. It means that the rate at which both computers work together per minute is 1/10 Therefore,

1/t + 1/30 = 1/10

Cross multiplying by 30x, it becomes

3x = x + 30

3x - x = 30

2x = 30

x = 30/2

x = 15 minutes

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Invest $6,300 in two different accounts the first account paid 11% the second account paid 6% in interest at the end of the year
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