Question

There are 31 fish in a tank. The fish are either orange or red. There are 7 more orange fish than the number of red fish. How many fish are orange? How many fish are red?

Answer 1

There are 12 red fish, 19 orange fish

Explanation:

Let y rep amount of red fish

y + 7 = Amount of orange fish

y + y + 7 = 31

2y = 31 - 7

2y = 24

y = 12

Then

y + 7

12 + 7 = 19