book Maths Puzzle Numerical Ability

What is the prime factorization of 12q?

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A plane flies 420 miles with the wind and 350 miles against the wind in the same length of time. If the speed of the wind is 23 mph, what is the speed of the plane in still air? The playing portion of a football field is 100 yards long and 50 yards wide. Each of the two end zones is 10 yards deep and 50 yards wide. What is the total area in acres? Provi