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31.08.2019 •
Mathematics
Working together, 4 computers can complete a task in 11 minutes. if 2 of the original computes are replace with computers that each run 20% faster, how many minutes will it
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Ответ:
4x = 11
Solving for x,
x = 2.75 minutes
That means that each of the four computers has an individual rate of 2.75 minutes. Now, for the succeeding sentence, we replace two of the computers with a much faster time. That means it would take a shorter time by 20%. The new time would then be:
New time = 2.75 ( 1 - 0.2) = 2.2 minutes
Therefore, the total amount of time for the task to be done by 2 original and 2 new computers is
Total time = 2(2.75) + 2(2.2)
Total time = 9.9 minutes
Ответ:
y = 4 + 2x
Step-by-step explanation:
Given,
The number of apples eaten by monkey everyday = 4,
Also, it eats two bananas for every banana that Tommy eats.,
I.e. if x represents the number of bananas Tommy eats,
The number of bananas eaten by monkey = 2x
So, the total number of fruits eaten by monkey = 4 + 2x
If y represents the total number of pieces of fruit the monkey eats,
⇒ y = 4 + 2x
Which is the required equation.