Urgent help needed
help me with the question of o. math​

All per-unit concepts rely on ratios,meaning,to provide a type of measurement

Can someone me and plz do the problem

Fanny mendelssohn manages all the magazines and paperback books at a local grocery store. she prices many paperbacks to sell at $7.99. the cost to the store is $5.29. what is the markup rate on a paperback book, based on its cost?