Vivian went on a bicycle trip through germany with her family. one afternoon, she rode her bicycle along a long flat road at a constant 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

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

the answer is 12 as i may remember

: )