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

WHAT IS NANOGRAM If a and b are negative and c is positive, determine whether the following are positive or negative.
(a) (-a)(-c)

(b) (-a)(b)

(c) (c-b)(c-a)

(d) a(b - c)