29 80 60 NOTE: Angles not necessarily drawn to scale.

Ответ:

kovacscsilla55owjvhn

03.05.2022

$2\frac{7}{12}$ hours or 2 hours 35 minutes.

Step-by-step explanation:

A trip to Portland, Oregon from Boston will take = $7\frac{3}{4}$ hours

We are finished = $\frac{2}{3}$ of the trip

= $\frac{2}{3}$ × $7\frac{3}{4}$

= $\frac{2}{3}$ × $\frac{31}{4}$

= $\frac{62}{12}$

= $\frac{31}{6}$

= $5\frac{1}{6}$ hours of the trip completed.

Now we will subtract from the total time of trip to completed time of trip.

= $7\frac{3}{4}$ - $5\frac{1}{6}$

= $\frac{31}{4}$ - $\frac{31}{6}$

= $\frac{93-62}{12}$

= $\frac{31}{12}$

= $2\frac{7}{12}$ hours = 2.58 hours or 2 hours 35 minutes

The trip will take $2\frac{7}{12}$ hours

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