general Maths Puzzle

An elevator in a 13-storey building travels the rate of 1 floor every 15 seconds.At the ground floor and the top floor, the lift stops for 50 sec. How many round trips will the elevator make during a 5 and half hour period

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general Other Question

A wheel rotates 16 times in a minute and moves 6.5 metres during each rotation.What is the time taken for the wheel to move through 930 metres? Which is greater of the following two ratios given that a and b are positive.

(a/5b)/(a/6b) Or (a/6b)/(a/7b)