SOLUTION: Bob goes 21mph faster than his dad. If Bob gets to a location in an hour, how long will it take his dad to get there if he is going 50mph? Bob: d1= 71x. r1= 71 t1= x

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: Bob goes 21mph faster than his dad. If Bob gets to a location in an hour, how long will it take his dad to get there if he is going 50mph? Bob: d1= 71x. r1= 71 t1= x       Log On


   

Question 1143019: Bob goes 21mph faster than his dad. If Bob gets to a location in an hour, how long will it take his dad to get there if he is going 50mph?

Bob:
d1= 71x.
r1= 71
t1= x
Dad:
d2= 50x
r2= 50
t2= x+1
Im not sure what to do from here.
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
The problem description is not very clear. It seems to imply dad goes at 50 mph and that Bob goes at 71 mph.

x, time for dad to go the same distance,
system%2871%2A1=d%2C50x=d%29

71=50x

x=1%2621%2F50------time, hours for dad.