At a pond there were 24 ducks swimming. the ratio of ducklings to adult ducks is 5: 1. how many ducklings were swimming at the pond?

Step-by-step explanation:

Let

x------> the number of ducklings

y------> the number of adult ducks

we know that

------> equation A

so

------> equation B

Substitute equation B in equation A

answer: 15

step-by-step explanation:

5x+40

5(x + 8)

7x - 49

7(x - 7)

18x + 9

9(2x + 1)

15x - 10

5(3x - 2)

step-by-step explanation:

for number one all you have to do is factor 5 out of 5x + 40

for number 2 factor 7 out of 7x - 49

for number three factor 9 out of 18x + 9

for number four factor 5 out of 15x - 10