if it fills 3/4'ths a cup in a half hour, 1 hour would be double of the half....just use common sense to figure it out really : )
3/4 + 3/4 = 6/4
6/4 simplified is 1 and 1/2s....
Your answer would be 1 cup per hour if IT DOES NOT HAVE 1 and 1/2 an hour as an answer!!!
Real answer 1 and 1/2 a cup per hour....