A group of hikers is planning a trip that will take them up a mountain using one route and back down using another route. They plan to travel down the mountain at a rate of one and a half times the rate they will use on the way up, but the time each route will take is the same. If they will go up the mountain at a rate of 4 miles per day and it will take them two days, how many miles long is the route down the mountain?	Choose the correct choice from the following answers:
A) 4  B) 6  C) 8  D) 12  E) 16
D = S*T   Given condition is for UP the mountain hikers takes 4 miles per day and total 2 days... miles = 8 miles...   For DOWN speed they take = 3/2(4) = 6 miles per day and for the same 2 days... miles = 12 miles..   Answer: option 12 is correct answer
<result>D</result>
A group of hikers is planning a trip that will take them up a mountain using one route and back down using another route. They plan to travel down the mountain at a rate of one and a half times the rate they will use on the way up, but the time each route will take is the same. If they will go up the mountain at a rate of 4 miles per day and it will take them two days, how many miles long is the route down the mountain?