Question

a plane left 30 minutes late than its schedule time and in order to reach the destination 1500km awah in timr it had to increase its speed bt 100km/h from the usual speed . Find its usual speed​

Answer 1

Answer:

500

Step-by-step explanation:

Let the usual speed be 'x'

we know the realtion v=d/t⇒t=d/v

30/60=1500/x-1500/x+100

on solving ⇒ x²+100x-300000

x≠-600,x=500