Mike and sam are running a 26 mile marathon. they started out at 8: 15 am. they both crossed the finish line at 1: 26 pm. how long did it take them to finish the race

Is the product of two rational numbers irrational or rational? first, make a hypothesis by multiplying two rational numbers. then, use variables such as x=a/b and y=c/d and the closure property of integers to prove your hypothesis.