Somebody Help Me!!
The rectangular playing area of a professional football field is 100 yards long. The perimeter of the playing area is 920 feet. The formula for the perimeter of a rectangle is [P equals two times l plus two times w] .
How many feet wide is the playing area? Don't forget to convert the length from yards to feet. (There are 3 feet in 1 yard.)

Solution: There are two ways to solve this problem.
You can solve the formula for the unknown variable, then substitute. Or, you can substitute, then solve the resulting equation.

Question

Somebody Help Me!! 
The rectangular playing area of a professional football field is 100 yards long. The perimeter of the playing area is 920 feet. The formula for the perimeter of a rectangle is [P equals two times l plus two times w] .
How many feet wide is the playing area? Don't forget to convert the length from yards to feet. (There are 3 feet in 1 yard.)

Solution: There are two ways to solve this problem.
You can solve the formula for the unknown variable, then substitute. Or, you can substitute, then solve the resulting equation.

ttp · Answer

I have to solve the problem with both methods.

cggurumanjunath · Answer

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