Astore manager wishes to reduce the price on her fresh ground coffee by mixing two grades. if she has 35 pounds of coffee which sells for $2.40 per pound, how much coffee worth $1.80 per pound must she mix with it so that she can sell the final mixture for $2.10 per pound?

The sum of two numbers is 86, and their difference is 20. find the two numbers

Mozart lenses inc. recently introduced seelites, a thinner lens for eyelasses. of a sample of 800 eyeglass wearers, 246 said they would purchases their next pair of eyeglasses with the new lenses. lenses inc. estimates that the number of people who purchase eyeglasses in a year is 1,700,000. most eyeglasses wearer buy one new pair of eyeglasses a year. what is the annual sales potential for the new lenses.

Abag of jelly beans contain 13 pink, green, 20 yellow, 10 black, 7 red, and 11 orange jelly beans. approximately what percent of the jelly beans are pink and yellow?