An office is printing 1000 copies of a document ujsing two printers. Printer B prints four times as many copyies as printer A. How many copies does printer B print?
A. 550
B. 600
C. 750
D. 800
Let's say printer A prints x copies. Therefore, printer B prints 4x copies.
The total number of copies printed is x + 4x = 5x = 1000.
Dividing both sides of the equation by 5 gives x = 1000/5 = 200.
So, printer B prints 4x = 4 * 200 = 800 copies.
The answer is D. 800.