Answer:
B) $26
Explanation:
Marginal Cost Formula:
Marginal Cost = Change in total cost / Change in quantity
Marginal Cost = (2070-1888) / 10-9
Marginal Cost = 182/1
Marginal Cost = $182
Marginal Cost = 182/70 = $26/hour
Working:
9 hours a day
Number of Hours worked during week = 9x7 = 63 hours
Total Cost = ((20+6)x63)+250 = $1,888
10 hours a day
Number of Hours worked during week = 10x7 = 70 hours
Total Cost = ((20+6)x70)+250 = $2,070