Respuesta :
[tex]\bf \cfrac{bw}{color}\qquad 9:2\qquad \cfrac{9}{2}\qquad \qquad \cfrac{bw}{200}=\cfrac{9}{2}\implies bw=\cfrac{200\cdot 9}{2}[/tex]
Answer:
900.
Step-by-step explanation:
We have been given that copy central prints black and white or colored copies. Yesterday, they printed 9 black and white copies for every 2 colored copies.
We will use proportion to solve the given problem as:
[tex]\frac{\text{Black and white copies}}{\text{Colored copies}}=\frac{9}{2}[/tex]
Substitute the given values:
[tex]\frac{\text{Black and white copies}}{200}=\frac{9}{2}[/tex]
[tex]\frac{\text{Black and white copies}}{200}*200=\frac{9}{2}*200[/tex]
[tex]\text{Black and white copies}=9*100[/tex]
[tex]\text{Black and white copies}=900[/tex]
Therefore, 900 black and white copies were printed.
