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

how do we solve the intersection pt (x,y) of d following equations/lines

20x + 20y >= 250
15x + 25y >= 375
18x + 12y >= 200

these three lines will intersect at a point, wha
Evaluate if a=3and b=5
37+a