Mathematics

Marlee

20 September, 08:00

The Baldwin family walked four over five of a mile in four over nine of an hour. What is their unit rate in miles per hour?

A. four-ninths over four-fifths equals four over nine mile per hour

B. four-fifths over four-ninths equals one and four-fifths miles per hour

C. four-ninths over four-fifths equals one and four-fifths miles per hour

D. four-fifths over four-ninths equals four over nine mile per hour