exam Maths Puzzle Numerical Ability

A dog owner has 250 feet of fencing to enclose a rectangular run for his dogs. If he wants the maximum possible area, what should the length and width of the rectangle be?

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Can someone help me on this?

List the factors of the number 27.

Thanks,
Sher
From 1980 to 1990 the population of Mesa, Arizona grew about 13,500 people each year to a population of about 290,000. During that same time period, the population of Tuscan, Arizo