Helen has 80 books to sell. each book is fiction or non-fiction. the ratio of the number of fiction books to the number of non-fiction books is 3: 1. each book has a normal price of £10. helen reduces the price of all the non-fiction books. [non-fiction. all books 1/2 price] helen sells all 80 books. work out the total amount of money helen will recieve.

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.

Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.