PreAlgebra Math
posted by Leah .
A bank teller is counting his money and notices that he has an equal number of tens and twenties. He also had $147 in other bills. If the total value of the bills he has is $1,167, how many tens and twenties does he have
What would be the equation in algebra?

$1167 ttl value of bills
$147 ttl value of other bills
$1020 value of tens and twenties
n = number of tens and twenties
10n = ttl value of tens
20n = ttl value of twenties
10n + 20n = 1020
Solve for n, number of tens and twenties
(equal number of both)