Question 1203619
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It took 5 hours for the cargo plane to catch up to the passenger plane, flying 70 km/h faster.<br>
That means the cargo plane made up 5*70 = 350 km in 5 hours.<br>
That means 350 km was the distance the passenger plane covered in its first two hours of flight.<br>
That means the speed of the passenger plane was 350/2 = 175 km/h.<br>
ANSWER: 175 km/h<br>