Flying to Dar es Salaam with a tailwind a plane averaged 177 km/h. On the return trip the plane only averaged 141 km/h while flying back into the same wind. What is the speed of the wind?
How fast would the plane go if there were no wind?

Aconstruction worker needs to put a rectangular window in the side of a building he knows from measuring that the top and bottom of the window have a width of 8bfeet and the sides have a length of 15 feet he also measured one diagonal to be 17 feet what is the length of the other diagonal