Question

In a flight of 600 km,an aircraft was slowed down due to bad weather. Its average speed for the trip was reduced by 200 km/hr. Find the total journey in km.​

Answer 1

Let the duration of the flight be x hours.

Then, 600 - 600 = 200

x x + (1/2)

600 - 1200 = 200

x 2x + 1

x(2x + 1) = 3

2x2 + x - 3 = 0

(2x + 3)(x - 1) = 0

x = 1 hr. [neglecting the -ve value of x]

Answer 2

$\huge\underline\mathfrak\red{Solution}$

The duration of the flight is 1 hour

Let the duration of the flight be x hours.

Then,600/x-600/x + (1/2)= 200

         600/x-1200/2x + 1= 200 

         x(2x + 1) = 3

         2x² + x - 3 = 0

        (2x + 3)(x - 1) = 0 

         x = 1 hr