Question 212317
D=RT
lET X & (X=4) BE THE 2 SPEEDS.
52=(X+X+4)*2
52=(2X+4)*2
52=4X+8
4X=52-8
4X=44
X=44/4
X=11 MPH FOR THE SLOWER RIDER.
11+4=15 MPH FOR THE FASTER RIDER.
PROOF:
52=(11+15)*2
52=26*2
52=52