Madelaine88
A certain manufacturer produces items for which the production costs consist of annual fixed costs totaling $130,000 and variables costs averaging $8 per item. If the manufacturer’s selling price per item is $15, how many items the manufacturer produce and sell to earn an annual profit of $150,000?
(A) 2,858
(B) 18,667
(C) 21,429
(D) 35,000
(E) 40,000
I eliminated, then backsolved with a shortcut.
Answers A, B, and C have numbers that are absurd. Eliminate them. If GMAT writers require calculations with those numbers in PS, I will risk being wrong over losing too much time for other questions.
Between remaining answers D and E, E looks better: 40,000 is quicker in calculation.
The shortcut: take three zeros off the large numbers. The calculated answer similarly will short by three zeros.
Total revenue = SP * # items
15 * 40 =
600Total cost = Variable Cost + Fixed Cost
Variable Cost= (cost/item * # items)
Variable Cost = (8 * 40) = 320
Fixed Cost = 130
Total Cost = 320 + 130 =
450Profit = TR - TC
600 - 450 =
150That's a match.
Answer E