Can someone tell me if this is correct?

TC=30 gallons x $1.58 = $47.40
TS=47.40 + .20 (47.40)
TS=47.40 + 9.48
TS=56.88

30gallons x .15=4.5
30 - 4.5 = 25.5

56.88/25.5 = $2.23

It would be good to know what's the question about and what it's asking too... don't you think? :rolleyes:

Sorry, math frustrates me to no end. The question wants to know if a grocery store buys 30 gallons of milk at a cost of $1.58 per gallon. The owner anticipates a 15% spoilage rate. In order to achieve a 20% markup based on selling price, what should be the selling price per gallon, rounding to the nearest cent.

Thank you. Yes, the calculations are good and I see nothing wrong with your answer. Well done! :)