Answer:
D) 720 kmph
Explanation:
First, let's find what distance this aeroplane covered. Distance (d) is the product of speed and time - here, we have a speed of 240 kmph and a time of 5 hours, gives us
[tex]d=240\cdot5=1200[/tex] km
Using that same fact, we can set up a new equation to solve for speed (s) when we have a distance of 1200 km and a time of 1 2/3 hours. For the sake of cleanliness, I'm gonna rewrite 1 2/3 as the improper fraction 5/3:
[tex]1200=(5/3)s[/tex]
Multiplying both sides of the equation by 3/5:
[tex]s=(3/5)(1200)=720[/tex] kmph
So our answer is D.
