The price of burgers increased from $4.00 to $4.40 and the quantity demanded decreased from 50 to 30 units per hour. Calculate the coeffcient for price elasticity of demand. Show your work

Torino company has 1,300 shares of $50 par value, 6.0% cumulative and nonparticipating preferred stock and 13,000 shares of $10 par value common stock outstanding. the company paid total cash dividends of $3,500 in its first year of operation. the cash dividend that must be paid to preferred stockholders in the second year before any dividend is paid to common stockholders is:

jackie's snacks sells fudge, caramels, and popcorn. it sold 12,000 units last year. popcorn outsold fudge by a margin of 2 to 1. sales of caramels were the same as sales of popcorn. fixed costs for jackie's snacks are $14,000. additional information follows: product unit sales prices unit variable cost fudge $5.00 $4.00 caramels $8.00 $5.00 popcorn $6.00 $4.50 the breakeven sales volume in units for jackie's snacks is

Industrial engineers who specialize in ergonomics are concerned with designing workspace and devices operated by workers so as to achieve high productivity and comfort. a paper published in this research area reports on a study of preferred height for an experimental keyboard with large forearm-wrist support. a sample of 31 trained typists resulted in an average preferred height of 80.0 cm