Question

To manufacture an automobile requires painting, drying and polishing. Epsilon motor company produce three types of cars, the Delta, the Beta, and the Sigma. Each Delta requires 13 hours for painting, 4 hours of drying and 5 hours of polishing. A Beta requires 19 hours for painting, 6 hours for drying, and 6 hours for polishing, and sigma requires 9 hours for painting, 131 hours for drying and 138 hours for polishing per month, how many of each type of car are produced?

Answer 1

s=11
b= 8
d= 7