Ralph runs at a constant rate of 3 miles per hour. How long will it take Ralph to run 15 miles?

A. 2 hr.

B. 3 hr.

C. 4 hr.

D. 5 hr.

J= r + 9 because since jessica rode 9 more miles than roger, you add 9 miles to rogers mileage.

Answer x=\frac{4(7+y)}{5}x=​5​​4(7+y)​​x=\frac{4(7+y)}{5}x=​5​​4(7+y)​​x=\frac{4(7+y)}{5}x=​5​​4(7+y)​​x=\frac{4(7+y)}{5}x=​5​​4(7+y)​​x=\frac{4(7+y)}{5}x=​5​​4(7+y)​​x=\frac{4(7+y)}{5}x=​5​​4(7+y)​​

step-by-step explanation:

45 is the only number in both sets