Blue, Inc., produces stereo speakers. The selling price per pair of speakers is $1,000. The variable cost of production is $360 and the fixed cost per month is $49,000. Calculate the contribution margin associated with a pair of speakers. Enter your answers as amounts only with neither commas nor decimals. $ In August, the company sold 6 more pairs of speakers than planned. What is the expected effect on profit of selling the additional speakers? Enter your answers as amounts only with neither commas nor decimals. Calculate the contribution margin ratio for Blue associated with a pair of speakers. Enter your answers as amounts only with neither commas nor decimals. % In October, the company had sales that were $9,100 higher than planned. What is the expected effect on profit related to the additional sales? Enter your answers as amounts only with neither commas nor decimals