Mr.Smith has just received 200 gallons of home heating oil.If he pays his bill within 10 days,the oil will cast $0.59 per gallon.If he pays after 10 days,he will pay $0.69 per gallon.What percent savings will Mr.Smith experience within 10 days.Assume that all taxes have been included in the above prices.

His discount is 10 cents

depending on what you want the dicount based on, the 59 cents or the 69 cents,

just divide 10 by 69 or 10 by 59

I would take 10/69
= .1449 = 14.5 %