Question

saved Erica saved 20% on a shirt she just bought if the amount of money she saved was $6 what was the original price of the shirt

Answer 1

Since 20% is $6 take 6 divide by 20 to find 1% then take times it by 100 to find 100% you should get $30

Answer 2

If the amount she saved was $6 for 20%, then the formula for finding savings would be cost*percentage.
But if you want to find the original cost, then you play with the current formula until you get this. $6/20%. Have a good one :)