Question

Of the eggs produced by salmon,80% hatch, and of those, 25% survive to migrate to the ocean. How many eggs are needed to produce 100 salmon that migrate to the ocean?

Answer 1

Answer:

500 eggs are needed

Step-by-step explanation:

so 1/4 or the 80 percent make it to the ocean so 20 percent of total salmon make it to the ocean.

so total number of eggs x

1/5x=100

x=500

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Answer 2

Answer:

Step-by-step explanation:

25% of (80% of eggs) = 0.25 × 0.80 × eggs = 100

Eggs = 100/(0.25 × 0.80) = 500

500 eggs are needed to produce 100 salmon.