An Electronics Firm Produces Two Models of Pocket Calculators: the A-100

Multiple Choice

An electronics firm produces two models of pocket calculators: the A-100 (A) and the B-200 (B) . Each model uses one circuit board, of which there are only 2,500 available for this week's production. In addition, the company has allocated a maximum of 800 hours of assembly time this week for producing these calculators. Each A-100 requires 15 minutes to produce while each B-200 requires 30 minutes to produce. The firm forecasts that it could sell a maximum of 4,000 of the A-100s this week and a maximum of 1,000 B-200s. Profits for the A-100 are $1.00 each and profits for the B-200 are $4.00 each.
-What is the time constraint?

A) 1A + 1B $\le$ 800.
B) 0.25A + 0.5B $\le$ 800.
C) 0.5A + 0.25B $\le$ 800.
D) 1A + 0.5B $\le$ 800.
E) 0.25A + 1B $\le$ 800.