book Maths Puzzle Numerical Ability

The lenghth of a rectanguler room is 5 feet more than 3 times the width.Find the dimensions if the perimeter is 62 feet?

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book Other Question

find the exact values for the trig functions, with the radian measure: pie/4 log(10x/y)=1+log x-log y. I have no idea whether this problem is true or false. Could you please help show me the steps in finding the answer?