10 rubber stamps cost $10.30 which equation would determine the cost of 2 rubber stamps?

You could set the problems as a proportion
10/10.30 i is equal to 2/?. So then figure out how many times does you 10 divide into 2 which is 5. What you di to the r
top you do to the bottom so divide $10.30 into 5 and you get $2.06

Ibelieve the total for the tip could be $21.90