multiply 1/6 by 6 to get 1 for a unit rate, so then multiply 3/8 by 6 to make it equal. *you cannot multiply each fraction by different numbers* 3/8 times 6 is 18/8, so that can reduce to 2 and 2/8 also known as 2 and 1/4. the unit rate is 2 and 1/4 jn an hour.