6th grade math homework help

[Kenneth]

How do I express in miles per hour, 300 yards in 10.9 minutes? Help please?

 

[tkhunny]

Dimensional Analysis!

\(\displaystyle \frac{300\;yd}{10.9\;min}\cdot\frac{60\;min}{1\;hr}\cdot\frac{3\;ft}{1\;yd}\cdot\frac{1\;mi}{5280\;ft}\)

Sometimes known as "multiplying by one (1)".

 

[HallsofIvy]

Or you could use \(\displaystyle \frac{1 mi}{1760 yards}\)

(I know that because I used to run the 440 yard dash- a quarter mile.)