exam Maths Puzzle Numerical Ability

A cowboy star has a silver-trimmed saddle worth $500, and two horses. When he saddles the poorer horse, the horse and saddle are worth twice as much as teh better horse; but when

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If Mr. Wee had 13 apples and 15 oranges. He pulls 2 without looking, what is the probability that they will both be apples? #60: the function f is one-to-one. Find its inverse and check your answer. State the domain of f and find its range using f-1(inverse of f)
f(x)=-3x-4/x-2