exam Maths Puzzle Numerical Ability

-5 x -7 + 10 x -2

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exam Other Question

A plane flies 300 miles with a tail wind in 1 hour. It takes the same plane 2 hours to fly
the 300 miles when flying against the wind. What is the plane’s speed in still air?
Here is my question: I am suppose to find the population growth with this equation; P=8t^2=Po the population is 1000 and need to get what each year's growth would be from 2010 to