The ratio of speeds of two aeroplanes is 7 : 15. If the first flight covers a distance of 1050 km in 3 hours, then what is the speed of the 2nd flight?
Answer & explanation
Correct answer: option 4
Ratio of speed of Aeroplanes is 7 : 15
We know, Speed = \(\frac{Distance}{Time}\)
Hence, the speed of the first aeroplane = \(\frac{1050}{3}\)
= 350 km/hour
According to question ,
Now, 7R = 550
1R = 50
Hence, the speed of the second aeroplane = 15R = 15 × 50 = 750 km/h
So , The speed of the second aeroplane is 750 km/h.