The following data relate to a company that produces and sells a travel guide that is updated monthly:

Fixed costs:
Copy editing	$6,000
Art work	2,000
Typesetting	72,000
Variable costs:
Printing and binding	$3.20 per copy
Bookstore discounts	4.00 per copy
Salespersons' commissions	0.50 per copy
Author's royalties	2.00 per copy

Each book sells for $20.00. The company sold 8,000 books in June and 10,000 books in July. The contribution margin ratio for the book is (round your final answer to the nearest tenth of a percent.)

		51.5%.
		71.5%.
		54.0%.
		51.9%.