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Ber [7]
3 years ago
15

Vinnie drives his car 210 miles and has an average of a certain speed. If the average speed had been 3mph more, he could have tr

aveled 228 miles in the same length of time. What was his average speed?
Mathematics
2 answers:
monitta3 years ago
6 0

Sorry this took so long.....

Had to get some help from the internet

Have a great day!!!!!

Pachacha [2.7K]3 years ago
5 0

Answer:

35 mph

Step-by-step explanation:

time = distance / speed

210 miles and has an average of a certain speed

t = 210 / s

If the average speed had been 3mph more, he could have traveled 228 miles in the same length of time

t = 228 / (s + 3)

Set equal

210 / s = 228 / (s + 3)

Cross multiply

210s + 630 = 228s

Subtract 210s from both sides

630 = 18s

Divie both sides by 18

35 = s

35 mph

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