exam Maths Puzzle Numerical Ability

A plane flies 500 miles with the wind and 340 miles against the wind in the same length of time. If the speed of the wind is 28mph, what is the speed of the plane in still air?

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exam Other Question

1. Suppose you are in the market for a new home and are interested in a new housing community under construction in a different city.
b) The sales representative later indicates t Please help me, I am learning how to factor and a few are stumping me.

(6A^2 - 5A-2)

Thanks