Question

1. the number of fish in a lake decreased by 25%. there were originally 60 fish in the lake. how many fish are in the lake now?

Explanation:

Step1: Find the percentage remaining

The fish population decreased by 25%, so the remaining percentage is $100\% - 25\% = 75\%$. Convert 75% to a decimal: $75\% = 0.75$.

Step2: Calculate the current number of fish

Multiply the original number of fish (60) by the decimal representing the remaining percentage: $60\times0.75 = 45$.

Answer:

45