"A bitcoin miner on btcguild has a hashrate of 740 Gh/s mining on one account. They set their manual payment threshold to 0.15 In order to get 0.15 bitcoins every hour, they would need 830 Gh/s per second
If their most recent hourly payment drops their balance to less then 0.0162651 btc, what will their next hourly payment be?"
I thought you said they had 1372 GH/s?
So, we can assume they have less than 830 GH/s?