SOLUTION: a group of hunters made a trip of 380 miles to a hunting lodge in 7 hrs. they traveled 4 hrs on a paved highway and the remainder of the time in a pasture road. if the average spee

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: a group of hunters made a trip of 380 miles to a hunting lodge in 7 hrs. they traveled 4 hrs on a paved highway and the remainder of the time in a pasture road. if the average spee      Log On


   

Question 1003763: a group of hunters made a trip of 380 miles to a hunting lodge in 7 hrs. they traveled 4 hrs on a paved highway and the remainder of the time in a pasture road. if the average speed through the pasture was 25 mph less than the highway , find the average speed and the distance traveled in each part of the trip
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Basic travel rates rule, RT=D 

            rate          time     distance
PAVED         r            4         ()
PASTURE       r-25        ()         ()
Total                     7         380

Fill-in the cells
            rate          time     distance
PAVED         r            4         r*4
PASTURE       r-25        3         (r-25)*3
Total                     7         380

Solve using the sum of the distances.