40 colored pens, 11 are red, 15 are black and the remaining is blue, red to black ratio is

11:15

Hope this helps :D

11:15

Step-by-step explanation:

Sub to Kevin Tuna Music

every 5 customers that walk in, only 2 buy popcorn.

step-by-step explanation:

basically 2/5.

brainliest would be appreciated.

answer: evaluate the objective function at each vertex to determine which - and -values, if any, maximize or minimize the function. example: find the minimum value and maximum value of the objective function f ( x , y ) = 4 x + 5 y , subject to the following constraints