Question

- A plane takes 2 hours and 45 minutes to cover the distance between two airports. If it
travels 20 km/h slower then it takes 3 hours. Find the speed of the plane. Also, find the
distance between the two airports.​

Answer 1

Step-by-step explanation:

D=rt

Distance is same

let x be the speed

D=2 3/4 *x

==11/4 x

speed x-20

d= (x-20)*3

equate both

11/4 x = (x-20)*3

11x= 12(x-20)

11x=12x-240

12x=11x=240

x= 240

speed = 240 kph

d=rt

d= 11/4 * 240

d=11*60

=660 km