Respuesta :

Answer:

75%

Step-by-step explanation:

There are 180 total pencils

There are 45 blue pencils

How many red pencils

180-45 = 135 red pencils

The percentage of pencils that are red = red/total

                                                                 = 135/180

                                                                 =.75

Changing to percent form

                                                                 =75%