Vivian went on a bicycle trip through Germany with her family. One afternoon, she rode her bicycle along a long flat road at a c onstant speed for 24 kilometers (km). The ride took her 1.2 hours (h). At what speed did she ride her bicycle? A. 0.05 h/km B. 20 mi/h C. 20 km/h D. 28.8 km•h
1 answer:
d = distance traveled by her on her bicycle on a long flat road = 24 kilometer
t = time taken by her to travel distance "d" on her bicycle on a long flat road = 1.2 hours
v = average speed of vivian = ?
we know that average speed is given as
v = d/t
inserting the values in the above formula
v = 24 kilometer / 1.2 hour
v = 20 kilometer/hour
hence the correct choice is
C) 20 km/h
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