exam Maths Puzzle Numerical Ability

The ratio of the number who were puissant to the number who were diffident was 2 to 5. If there were 2450 who were either puissant or diffident, now manu were puissnat?

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exam Other Question

Simplify the rational expression:
(x^2 - 7x + 12)/(x^2 - 16)

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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?