exam Maths Puzzle Numerical Ability

(x^2/y^2) - 1 / (x/y) + 1

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exam Other Question

Allen bought 20 stamps at the post office in 37 cents and 20 cents denominations. If the total cost of the stamps was $7.06, how many 37 cent stamps did Allen buy? (3x-5)(x+2)= -6

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