Can you figure out the answer?
A telephone system sales man claims that his product is "5-9's" compliant. This term means that the product will be functional 99.999% of the time. So in a non-Leap year how long will the product not be working? Express your answer in hours, minutes, seconds.
2006-09-08 05:32:10 · 10 answers · asked by Steve P 5 in Science & Mathematics ➔ Mathematics
"5-9s" means "five nines"
The product working, in this exaqmple the product being a telephone system, means availability of dial tone. You would want dial tine to be available 100% of the time. Right?
2006-09-08 05:41:41 · update #1
(365*24*60*60)/100000=315.36 seconds, or five minutes and 15.36 seconds (00:05:15:36)
2006-09-08 05:34:22 · answer #1 · answered by Anonymous · 1⤊ 1⤋
There are 315,360,000 seconds in a non-leap year (60*60*24*365). If the product works 99.999% of the time it won't be working 0.001% of the time, or 1 out of every 100,000 seconds.
315,360,000 / 100,000 = 315.36 seconds during the year that the phone system doesn't work (on an average year). This would be 5 minutes and 15.36 seconds.
2006-09-08 07:34:09 · answer #2 · answered by Kyrix 6 · 0⤊ 0⤋
8.76 hours is 8 hrs, 45 mins and 36 seconds.
365*24*60*60 is 31, 536,000 seconds in a year. .001 is the amount of down time. .001*31,536,000 is 31,536 seconds. Divide by 60 seconds to get minutes, divide by minutes to get hours. This gives you the 8.76 hours that must be converted to 8 hrs 45 mins and 36 seconds. .76 hours is 45 mins and 36 seconds. Ask a qualified school teacher. Good luck
2006-09-08 08:24:00 · answer #3 · answered by wader 1 · 0⤊ 0⤋
I agree with Augmom's answer. 8 hours 45 minutes 36 seconds
2006-09-08 05:49:17 · answer #4 · answered by inder 1 · 0⤊ 0⤋
The product does NOT work .001% of the time, so you get:
.001% x 365 days x 24 hrs/day = 8.76 hrs that it is not working, so 8 hours plus .76 hrs, which equals:
.76 hrs x 60 min/hr = 45.6 min, so 8 hrs plus 45 min plus 0.6 min it is not working:
.6 min x 60 sec/min = 36 sec
Therefore, adding all togethter you get .001% x 365 days = 8 hrs 45 min 36 sec that the product is not working each non-leap year
2006-09-08 05:34:36 · answer #5 · answered by I ♥ AUG 6 · 1⤊ 0⤋
If 59 s means 59 seconds then all you need to do is work out how many minutes in a year, then take off one second for each of them. The total number of seconds is how long it wont be working for.
2006-09-08 05:35:31 · answer #6 · answered by Frankie 2 · 0⤊ 1⤋
Well, there's no guarantee that it won't work at all in that time. Just a guarantee that it will work for all but 5 minutes and 15.36 seconds.
2006-09-08 05:39:15 · answer #7 · answered by Edward T 2 · 0⤊ 1⤋
The question cannot be answered unless you know how often the product is used. If it is used continuously, then you need to use complex statistitics, far beyond me.
2006-09-08 05:34:41 · answer #8 · answered by Qwyrx 6 · 0⤊ 1⤋
5 minutes and 15.36 seconds
2006-09-08 05:39:00 · answer #9 · answered by Anonymous · 0⤊ 1⤋
x 99.999
--- = ---------
31536000 100. 31536000=seconds per year
x=364days 23hrs 54min 44.64sec
answer- 5min 15.36sec
.
2006-09-08 05:55:11 · answer #10 · answered by Mr Right 2 · 0⤊ 0⤋