i5's cpus are doing 20h x 50 = 1000h
now he needs to give 1 core to the user so the 1000h drops to 750h
take ⅓ off for power down he drops to 500h
I am earning 150 usd a day with 350h
lots of caveats here.
first all i5's are not the same
second he may need to give 2 cores not one core
so 1000h x ½ = 500h x ⅔ = 333h which earns about 140 usd a day.
but this is a smoking hot coin and this could be very short term
and he could have shit cpus like a pentium g 4400 which earns 4h not 20 h
Are you talking about Zcoin or Zcash?
https://bittrex.com/Market/Index?MarketName=BTC-ZEC
the symbol is ZEC
below you can see an i5 all in does 19-20h
an i3 all in does 12-13h
so if he has 50 i5's or 50 i7's he will make some money. even if he has to reduce the hash rate by 50%