Stacy and Heather are 20 miles apart and walk towards each other along

Good question to practice translation of word problems into actual equations.

Original distance between S and H = 20 miles.

Speed of S = 5+6 = 6 mph, Speed of H = 5 mph.

Time traveled by H = t hours ---> time traveled by S = t+24/60 = t+2/5 hours.

Now, the total distances traveled by S and H = 20 miles ---> 6*(t+2/5)+5*t=20 ---> t= 8/5 hours. Thus H has traveled for 8/5 hours giving you a total distance for H = 5*8/5 = 8 miles.

B is thus the correct answer.

Hope this helps.

P.S.: based on the wording of the question, you should calculate "how far from the original destination has Heather walked when the two meet". 'Original destination' for H does not make any sense. Original destination for H was situated at a distance of 20 miles.