Carlos purchased an antique chair for $15 he later so the chair for $27 to an antique dealer what was the percent markup of the chair

Find three consecutive numbers such that the sum of one-fourth the first and one-fifth the second is five less than one-seventh the third

How do you find principle and simple interest

Bob is putting books on a shelf and takes a break after filling 18 1/2 inches on the book shelf. the book shelf is now 2/3 full. how long is the entire bookshelf?