Question

At Starbucks, there are three sizes of coffee drinks, Small (200 ml), Regular (400 mL) and Large (800 mL), and they cost $2.25, 53.75, and $5.75, Respectively. On one evening Starbucks sold 39 coffees, the total volume of the coffee sold was 19,800 mL, and the amount of money made in coffee sales was $129. Using Cramer's rule how many of each size of coffee did customers buy that evening? (Submit your solution BY your HAND-writing)

Answer 1

According 7 2 bottles are to question, we can form matrox equation, u (39 200 400 800 1980o 2.25 375 J.75 129 where no. of conall, regular, large 9, y, 2 rupectively, by crames's 400 800 El (400x5.25 - PDOX3.25) 12.25 3.75 5.75 -1(20045.75 - 800x2.20) +1(200x3.25 400x2.251 -700 + 650 - 150 -200 - 200