In a fish tank, there are 15 goldfish, 6 angelfish, and 18 guppies. If a fish is selected at random, find the probability that it is an angelfish or a guppy.
A) $\frac { 11 } { 13 }$
B) $\frac { 8 } { 13 }$
C) $\frac { 7 } { 13 }$
D) $\frac { 5 } { 13 }$

Question

In a fish tank, there are 15 goldfish, 6 angelfish, and 18 guppies. If a fish is selected at random, find the probability that it is an angelfish or a guppy. 
A) $\frac { 11 } { 13 }$
B) $\frac { 8 } { 13 }$
C) $\frac { 7 } { 13 }$
D) $\frac { 5 } { 13 }$

Quizplus · Accepted Answer

The total number of fish is 15 + 6 + 18 = 39. The number of angelfish and guppies combined is 6 + 18 = 24. Therefore, the probability of selecting an angelfish or a guppy is $\frac{24}{39}$, which simplifies to $\frac{8}{13}$.

In a Fish Tank, There Are 15 Goldfish, 6 Angelfish 1113\frac { 11 } { 13 }1311​

In a Fish Tank, There Are 15 Goldfish, 6 Angelfish $\frac { 11 } { 13 }$