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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?

Afour-ninths over four-fifths equals four over nine mile per hour
Bfour-fifths over four-ninths equals one and four-fifths miles per hour
Cfour-ninths over four-fifths equals one and four-fifths miles per hour
Dfour-fifths over four-ninths equals four over nine mile per hour

Verified Answer :

derrekandrews

B, four-fifths over four ninths

Answer:  Option 'B' is correct.

Step-by-step explanation:

Since we have given that

Number of miles the Baldwin family walked is given by

\(\frac{4}{5}\ miles\)

Number of hours the Baldwin family walked is given by

\(\frac{4}{9}\ hour\)

So, we need to find the unit rate in miles per hour.

\(Speed=\frac{Distance}{time}\\\\Speed=\frac{\frac{4}{5}}{\frac{4}{9}}\\\\Speed=\frac{9}{5}=1\frac{4}{5}\ mph\)

Hence, Option 'B' is correct.

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