George rode the 27 miles to town in 2 hours. He reduced his speed by 10 miles per hour on the

return trip. How long did the return trip take?

(A) 1.15 hours (B) 7.71 hours (C) 2.74 hours (D) 1.26 hours

B. 7.71 hours

Step-by-step explanation:

If he rode 27 miles in 2 hours then that means he rode 13.5 miles in 1 hour because 13.5 is half of 27. This also means that he was moving at 13.5 mph. He reduced his speed on the return trip by 10 mph so, 13.5 - 10 = 3.5. Now that we know he was going 3.5 mph on the return, we can multiply 3.5 by 7.71 to get 27 since that's how far the ride was. 3.5 x 7.71 = 26.985. It's not exactly 27 but it's a lot closer than the rest.