Answer:
15 = total fish in the pond
Explanation:
Number of carp = total fish in the pond * percentage of carp
We know the number of carp and the percentage of carp
Number of carp = 6 and the percentage of carp = 40% (in decimal form = .4)
Substitute these in
6 = total fish in the pond * .4
Divide each side by .4
6/.4 = total fish in the pond *.4/.4
15 = total fish in the pond