Question

1)In a flight of 600km, an aircraft was slowed down
due to bad weather. Its average speed for the trip
was reduced by 200km/hr and the time increased by
30 minutes. Find the duration of the flight.
(ans. = 1 hours)
SALE
once​

Answer 1

Question:

1)In a flight of 600km, an aircraft was slowed down

due to bad weather. Its average speed for the trip

was reduced by 200km/hr and the time increased by

30 minutes. Find the duration of the flight.

(ans. = 1 hours)

SALE

once

Answer:

|I{•------» brainliest plz «------•}I|

Answer 2

Answer:

Let the original speed of the aircraft be x km/hr.

then new speed =(x−200) km.hr

Duration of flight at original speed =( x600 )hr

Duration of fight at reduced speed =( x−200600 )hr

∴

x−200600

−x600 = 21

⇒ x(x−200)

600x−600(x−20)

= 21

⇒ x 2 −200x120000 = 21

⇒x 2 −200x−240000=0⇒x

2−600x+400x−240000=0

⇒(x−600)(x+400)=0⇒x=600orx=−400⇒x=600

So, the origianl speed of the aircraft was 600km/hr

hence, duration of flight =( x600 )hr=( 60600 )hr=1hr

Step-by-step explanation:

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