Answer:
D
Step-by-step explanation:
so total travel by x bikers = 50 multiplied by x = 50x
According to the question
50x = 560
dividing 560 miles by 50 miles per biker give ya 11.2 or approximately 12 bikers.
What I would do for this problem, is move all the terms that don't contain m to the right side, and then solve.
m = 4/5.
I've included two pictures showing steps on how to solve. Hopefully this helps more than words.
I believe that the answer is C sorry if it is wrong.