imthebestatcod
31.07.2019 •
Mathematics
Aski resort can manufacture enough machine-made snow in 12 h to open its steepest run, whereas it would take 36 h of naturally falling snow to provide enough snow. if the resort makes snow while it is snowing naturally, how long will it take until the run can open?
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Ответ:
t/12 is the rate the resort makes snow,
t/36 is the rate for naturally falling snow.
If it is snowing, AND the resort is making snow, then
1/12+1/36=1/t
3/36+1/36=1/t
4/36=1/t
4t=36
t=9
Ответ:
15 ways
1 and 21 and 3 1 and 4 1 and 51 and 62 and 32 and 42 and 52 and 63 and 43 and 53 and 64 and 54 and 65 and 6Hope this helps