Ethan had a rectangular garden in his backyard. He wanted to make a vegetable garden but had to fence it in so his
dog Brutis wouldn't eat the vegetables. The perimeter of his garden was 60 ft. He already had 30 ft of fencing for the
both widths of his garden. What is the length of his garden?
step help please ?

Answer: the correct answer is 10step-by-step explanation: let the number be n, then the expression becomes,then“twelve more than the quotient of a number and two, decreased by four” iswhen n=4,we substitute 4 whetever we see n to get,we simplify to obtain,we further simplify to get,therefore the correct answer is c.