Question

A plane takes 2 hours and 45 minutes to cover the distance between the 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.
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Answer 1

Answer:

let the original speed be x time taken= 2hrs 45mins= 165/60 hours distance= s*t=165x/60km

if the speed is 20 km per hour less

new speed =x-20 time taken= 3hrs

distance =3* (x-20)

3(x-20)= 165x/60

x= 240 km/hr

distance= 660 km

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Answer 2

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