One number is 10 times as large as another, and their difference is 81. Find the numbers.
If x represents the smaller number, then the larger number is
x10
10x
x+10

Problem 3 a bank charges a service fee of $7.50 per month for a checking account. a bank account has $85.00. if no money is deposited or withdrawn except the service charge, how many months until the account balance is negative