Question

An aeroplane covers a certain distance at a speed of 240 km/h in 5 hours. To
cover the same distance in 1 2/3hours, it must travel at a speed of ?
(a) 300km/h (b) 300km (c) 600km/h (d) 720km/h​

Answer 1

Distance = (240 × 5) = 1200 km.Speed = Distance/TimeSpeed = 1200/(5/3) km/hr. [We can write 1 32 hours as 5/3 hours]∴ Required speed = (1200× 53 ) km/hr=720 km/hr.

Answer 2

Answer:

a) 300 km/h

Step-by-step explanation:

Given,

Aeroplane covers distance = X

At speed = 240km/h

In time = 5 hr

Now this is equation we get,

Speed = distance / time

240 = X / 5

X = 240*5

X = 1200 km

ATQ,

distance = 1200 km

time = 12/3 hrs = 4hrs

speed = Y

In equation,

V = S / T

Y = 1200 / 4

Y = 300 km/h