In order to answer this question, you need to know how many hours there are in one day. After that, it's a piece-o-cake.
1 day = 24 hours .
Now you can make a table:
1 day = 24 hours 2 days = 48 hours 3 days = 72 hours 4 days = 96 hours 5 days = 120 hours 6 days = 144 hours 7 days = 168 hours 8 days = 192 hours 9 days = 216 hours 10 days = 240 hours
Cost Price for oil change =$27 Charge for the customers =$40 Markup cost = Difference between selling price and cost price =$40-$27=$13 To find the percent of markup, divide the markup cost by the cost price and multiply it by 100. Markup percent = (13/27)*100 =48.15%