1/9 : 1/2 : 1hour Cross multiply- 1/9=1/2x Solve the equation to find x, which is how far in one hour. 1/9 divided by 1/2 = 2/9 A simpler way to solve this SPECIFIC problem is that we know that two halves (1/2 1/2) is one. So, 1/2 x2 is 1. 1/9 x 2 is 2/9 2/9 mi in 1 hour
