Kilometers 69264

Laura went for a new bike ride. In an hour, her father followed her on the same route at a speed of 60 km/h and overtook her in 1/2 hour.
a) Find the length of Laura's route in kilometers before her father caught up with her.
b) Determine in kilometers per hour what average speed Laura was driving.

Correct answer:

s =  30 km
v1 =  20 km/h

Step-by-step explanation:

t1=1 h t2=1/2=21=0.5 h v2=60 km/h  s=v2 t2=60 0.5=30 km
v1=t1+t2s=1+0.530=20 km/h

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