Question

1. a plane flies at a speed of 900km/h and travels 7000km non-stop. how long did the trip take, in hours and minutes) (b - 2)

Explanation:

Calculate total travel time in hours

$$ t = \frac{d}{v} = \frac{7000\text{ km}}{900\text{ km/h}} = \frac{70}{9}\text{ hours} = 7\frac{7}{9}\text{ hours} $$

Convert fractional hours to minutes

$$ \frac{7}{9}\text{ hours} = \frac{7}{9} \times 60\text{ minutes} = \frac{420}{9}\text{ minutes} = 46\frac{2}{3}\text{ minutes} $$

Express final time in hours and minutes

$$ t = 7\text{ hours and } 46\frac{2}{3}\text{ minutes} \approx 7\text{ hours and } 47\text{ minutes} $$

Answer:

\(7\text{ hours and } 46\frac{2}{3}\text{ minutes}\) (or approximately \(7\text{ hours and } 47\text{ minutes}\))