Question

In a flight of 2800 km, an aircraft was slowed down due to bad weather. Its average speed is reduced by 100 kmph and time is increased by 30 minutes. Find the original duration of the flight.

Answer 1

ᴴᴱᵞ ᴮᵁᴰᴰᵞ

ᴴᴱᴿᴱ'ˢ ᵀᴴᴱ ᴬᴺˢᵂᴱᴿ

_______________________________

# ᴿᴱᶠᴱᴿ ᵀᴴᴱ ᴬᵀᵀᴬᶜᴴᴹᴱᴺᵀ

ᴴᴼᴾᴱ ᴴᴱᴸᴾᴱᴰ

ᴶᴬᴵ ᴴᴵᴺᴰ

Answer 2

speed be x
distance= 2800 km

t = 2800/x

speed is reduced by 100
speed = x - 100

time = 2800 / ( x - 100 )


Its average speed is reduced by 100 kmph and time is increased by 30 minutes (1/2 h ).

(2800 / x - 100) - 2800/x = 1/2

x=-700 , x= 800

-700 will be neglected,speed is not negative

x = 800


time = 2800 / 800
time = 7/2 hours