exam Maths Puzzle Numerical Ability

A rectangular room is 14 feet narrower than its length. If 392 square feet of carpet is needed to cover the entire room, what is the length of the room?

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exam Other Question

3/2y+2 - 5/4y-4 = 2y/y^2-1 find the value of m for which the curve y=8mx^2+3mx+1 touches the x-axis.