Question

At a wildlife preserve, 1/3 of the total number of reptiles and birds are reptiles. There are 14 reptiles. How many birds are in the preserve?

A. 28 birds
B. 21 birds
C. 42 birds
D. 45 birds

Answer 1

To find the number of birds in the preserve, we use the given proportion of reptiles to calculate the total number of reptiles and birds. Then, we calculate the number of birds from the total number. The correct answer is B. 21 birds.

Step-by-step explanation:

To find the number of birds in the preserve, we need to know the total number of reptiles and birds combined. If 1/3 of the total number of reptiles and birds are reptiles, then 2/3 must be birds. Since there are 14 reptiles, we can set up the equation:

2/3(total number of reptiles and birds) = 14

To find the total number of reptiles and birds, we can multiply both sides of the equation by 3/2:

3/2 * 2/3(total number of reptiles and birds) = 3/2 * 14

Total number of reptiles and birds = 21

Since 2/3 of the total number is birds, we can find the number of birds by multiplying the total number by 2/3:

21 * 2/3 = 14

Therefore, there are 14 birds in the preserve. The correct answer is B. 21 birds.