### Home > INT2 > Chapter 4 > Lesson 4.1.3 > Problem 4-31

4-31.

You are feeling impulsive, so you are going to have the owner of the pet store randomly pick a fish for your aquarium at home.

A tank at the pet store contains

spotted guppies, red barbs, red tetras, and golden platys. What is the probability (expressed as a percent) of getting a red fish from this tank? How many red fish are in the tank? How many total fish are in the tank?

In a different tank that contains only golden platys, the probability of getting a female fish is

. If there are female fish in the tank, how many total fish are in the tank? If

= number of total fish in the tank