Apositive number is 7 less than another positive number. 4 times the greater numver added to 1/3 of the lesser positive number is 80. find the two positive numbers

So a is lesser
b is greater than make word problem into equations and than eliminate and solve.
a-7 =b
4b + 1/3a =80
to eliminate a or b need to be cancelled so you can multiply top by 4 to cancel b or -1/3 to cancel a than combine meaning add the a, b, and constants together to form new equation than use basic math to solve.

doing so you will get a or b now you can just plug in to 1 of the equation top or bottom to solve for other letter.

Answer th numbers are 233/3 for b and 324/13 for a

No he does not because he can only cover 12 square feet from 15 square feet which he will still need 3 more. this is because if 3×5=15 square feet and 15-12=3 which thats the answer