ill give u a good rating if u answer this :)

The number of ducks in the pond tripled when the new flock landed. Next, 11 more ducks came. The resulting number of ducks was 13 less than 4 times the original number. What was the number?

Let the original number of ducks =D

The new number of ducks =3D + 11

3D + 11=4D - 13

D =11 + 13

D=24 the original number of ducks.

Let N  = the original number of ducks

So we have.....

3N + 11 = 4N - 13     add 13 to both sides, subtract 3N from both sides

N = 24