Question

A professional cyclist is training for Tour de France. What was his average speed in miles per hour if he rode the 120 miles from Laval to Blois in 4.7 hours? Round your answer to the nearest tenth

Answer 1

A.25.5 mph
B.115.3 mph
C.70.4 mph
D.564.0 mph

Answer 2

Do you know that distance = rate times time?

Answer 3

no

Answer 4

Well if you go 50 miles an hour for two hours, how far will you get?

Answer 5

100 miles?

Answer 6

Good job!!

Answer 7

100 miles is distance, isn't it? And 50 miles an hour is rate and 2 hours is time. So you multiplied rate times time and got the distance. Would you agree?

Answer 8

hmm

Answer 9

does this answer my question?

Answer 10

So we usually write: d = rt

Answer 11

or is this a example

Answer 12

In your problem, what is the distance?

Answer 13

120 miles in 4.7 hours

Answer 14

its asking for the speed

Answer 15

Yes but what is the distance? The 120 miles or the 4.7 hours?

Answer 16

120 miles

Answer 17

Then where do you think you should put that in the formula d = rt?

Answer 18

well that would be in d so 120mile=r times 4.7 hours

Answer 19

Perfect!! Now can you solve that equation?

Answer 20

how though?

Answer 21

Divide both sides by 4.7 hours

Answer 22

oh yeah yeah then i should get, 25.5 mph right

Answer 23

Great job!! And a fast learner too.

Answer 24

thank you your a great teacher

Answer 25

yw

Answer 26

I have midterms thats y and im scared and the worst part its tommorow

Answer 27

Study hard and think positively.

Answer 28

yeah im in middle school and I have to get all these questions sorted out before i go to sleep

Answer 29

Good luck.

Answer 30

thanks im going to need it