exam Maths Puzzle Numerical Ability

A bicyclist rode into the county for 5 hours. In returning her speed was 5mi/h faster and her trip took 4 hours. What was her speed each way?

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exam Other Question

this term there are eight candidates for three student senate seats, how many different ways can the seats be chosen? How do you complelty factor out, x^2 + 12xy + 35y^2, whats the answer?