N airplane flew for 6 hours against a tail wind of 25 kmhr The return trip with the same wind took 5 hours Find the speed of the airplane in still air?

Answer 1

Very interesting. This was obviously a Wonderland Airlines flight, on a route where a tailwind

slowed them down and a headwind sped them up.

But we understand what you're trying to say.

6 (S - 25) = 5 (S + 25)

Eliminate parentheses:

6S - 150 = 5S + 125

Add 150 to each side:

6S = 5S + 275

Subtract 5S from each side:

S = 275

When the wind helps, ground speed is 300, the craft covers 1,500 in 5 hours.

When the wind hurts, ground speed is 250, the craft covers 1,500 in 6 hours.