If you have 90 ml of water mixed with 10 ml of pollutant, the
concentration of pollutant is
A. 10:10
B. 1:10
C. 1:100
D. 1:1000

answer: bea's uncle is 25 years old.

step-by-step explanation:

given the equation , we can say that the variable "x" represents the age of bea's uncle. then to find his age, we need to solve for "x":

we must add 15 to both sides of the equation:

now we need to divide both sides of the equation by 3:

therefore, we can conclude that bea's uncle is 25 years old.

∈3,600

step-by-step explanation: