exam Maths Puzzle Numerical Ability

3(x+2)-5=2x+7

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exam Other Question

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. An employee who receives a weekly salary of $200 and a 8% comission is paid according to the formula p (s) = 0.008s+200, where s represents the total weekly salary for weekly sales of $2,405,$2,945, and $4,395.