We are given with the data of 490 milligrams of sodium content of burrito and 700 milligrams of sodium content of peanut butter sandwich. The total sodium consumption should be less than 4000 milligrams. We are told to represent he number of microwave burritos as x and the number of peanut butter sandwiches as y. The inequality equation thus is 490 x + 700 y ≤ 4000.
Take how much was added, divide by how much you originally had. 100-80=20. 20/80= 25%
I'm not 100% sur what it is asking but I think the expression would be
15 min. * 10 = min. till the tank is full
