Question

2. Rian runs a road race at an average speed of 6 miles per hour. Rayna runs the same race at an average speed of

11 kilometers per hour
Who moving is faster? Explain or show your reasoning
Note: There are about 8 kilometers in 5 miles.

Answer 1

Rayna.

Explanation:

Rian: 6 miles per hour

Rayna: 11 kilometers per hour

-----------------------------------------

8 kilometers=5 miles

5/8=x/11

cross product

8*x=5*11

8x=55

x=55/8

Rayna: 55/8 miles per hour

55/8>6 since 55/8=6.875.

Therefore, Rayna moves faster.