exam Maths Puzzle Numerical Ability

I each dimension of room is increased one meter, the area is increased by 51 meters; and if the length is increased one meter and the width diminished by one meter, the area is decreased three square meters. Find the dimensions of the room?

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exam Other Question
In planning for a new item, a manufacturer assumes that the number of items produced x and the cost in dollars c of producing these items are related by a linear equation. Project Write the equation of the line x-intercept (12,0) and y-intercept (0,4).