SOLUTION: Rate time distance Practice problem Alma started biking to the restaurant traveling 15 mph, after some time the bike got a flat so Alma walked the rest of the way, traveling 4

Question 1175203: Rate time distance Practice problem

Alma started biking to the restaurant traveling 15 mph, after some time the bike got a flat so Alma walked the rest of the way, traveling 4 mph. If the total trip to the restaurant took 11 hours and it was 99 miles away, how long did Alma travel at each speed?

_______hours at 15 mph

_______hours at 4 mph
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
RT=D Basic Rule

          SPEED       TIME       DISTANCE

BIKING        15          b         15b

WALKING        4        11-b       4(11-b)

TOTAL                    11         99

You see what is happening here and should be able to setup equation and solve and finish.
SETUP THE OBVIOUS EQUATION FOR THE TOTAL DISTANCE. SOLVE!
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