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A commuter train travels59 miles in 45 minutes. What is its speed inmiles per hour?The speed is approximately units per . (Round to the nearest tenth as needed.)

Answer :

Transform the 45 minutes into hours, as shown below

[tex]\frac{45}{60}=\frac{3}{4}=0.75[/tex]

Then 45 minutes is equal to 0.75 hours.

Divide the number of miles by the number of hours,

[tex]\frac{59miles}{0.75hours}=78.666...\frac{miles}{hours}[/tex]

Rounding to the nearest tenth,

[tex]\Rightarrow\frac{59}{0.75}\approx78.7[/tex]

The answer is 78.7 miles per hour, approximately.

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