book Maths Puzzle Numerical Ability

How do I convert 9/16 to a percent?

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book Other Question

the perimeter of a rectangle is 44cm. The length is 2cm more than three times the width. Find the dimensions of the rectangle. my "apollo 13" DVD falls out of its case and rolls down the hill. If the DVD is 5inches wide and rolls a distance of .0035, how many times does it roll?