High School

Andre can run 5 miles in 40 minutes. At that rate of speed, how long would it take him to run 10 kilometers? Use the conversion factor 1 mile ≈ 1.61 kilometers.

A. 8 minutes
B. 50 minutes
C. 64 minutes
D. 80 minutes

Answer :

Answer:

50 minutes = B

Step-by-step explanation:

Andre can run 5 miles in 40 minutes

for 1 miles = 40/5 = 8 minutes

  • for 10 kilometres

1 mile = 1.61 kilometres

x = 10 kilometres

x= (10x1)/1.61= 10/1.61 = 6.21miles

  • for 1 miles = 40/5 = 8 minutes
  • 6.21 miles = 8 x 6.21 = 49.689 minutes ≈ 50 minutes = B

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