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Kiona3815
26.07.2019 •
Mathematics
Many of a bank's customers use its atms to transact business after normal banking hours. during the early evening hours customers arrive at a certain atm location at a rate of one every 7.2 minutes. on average 28.9 customers per hour can be served by the atm. what is the expected number of minutes customers spend at the atm (waiting plus using it)?
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Ответ:
18/157
Step-by-step explanation
The key to solving this problem is to find the greatest common divisor of 72 and 628.
To find the greatest common divisor of 72 and 628, we list all of the factors of both numbers so we can compare the lists.
When we compared the factors of 72 (1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72) and 628 (1, 2, 4, 157, 314, 628) we found that 4 is the largest factor that they have in common.
Since 4 is the largest common factor of 72 and 628, 4 is also the greatest common divisor of 72 and 628.
Now, we divide both the numerator and denominator in 72/628 by the greatest common divisor as follows:
Numerator: 72/4 = 18
Denominator: 628/4 = 157
Then, we put the numerator and denominator that we are left with back together to get our answer. 72/628 to the simplest form is: 18/157