exam Maths Puzzle Numerical Ability

Formulate three word problems from day to day life that can be translated into linear equations in one variable, two variables, and three variables.

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exam Other Question

5x + 6 = 31 Peter plans to fence off a square feed lot and then cross-fence to divide the feed lot into four smaller square feed lots. If he uses 480 ft of fencing, then how much area will be filled in?
The answer in the back of the book is 6400ft squared.