If 7:41 is nineteen minutes before eight o' clock, and 8:22 is twenty-two minutes after eight o' clock, therefore, simply add nineteen and twenty-two, and you will get a sum of forty-one minutes. Therefore, the answer is forty-one minutes. Let's try another one: how many minutes are there between 9:59 and 10:23? If there are sixty minutes in an hour, here's the technique. Get how many minutes are there before the next hour starts, and add that to how many minutes the hour has passed.