Lana is deciding whether or not to buy a pool pass for the summer. A pass costs $40 and $1 for admission each day, which is shown by the equation y = d + 40. Without a pass, the cost is $5 a day, which is shown by the equation y = 5d. Use the system of equations to find the number of days, d, for which the cost will be the same whether she decides to get a pass or not.

Okay so n is going to represent our first number. since the second number of five times greater than n, the second number will be represented as 5n. for us to figure out the two  numbers we need to have  the value of n first. this is going to be done by adding the two numbers together, n and 5n. it can be simplified as 6n, which the problem states is equal to 72. divide 72 by 6n and you can solve for n.  n+5n=726n=72n=(72/6)n=12  now that we know the value of n, we have to multiply 5 times 12 which equals 60. so our two numbers/integers are 12 and 60

It is 53 calories