The number of fish in a lake decreased by 25% between last year and this year, Last year there were 80 fish in the lake. What is the population this year?

The scale for a map is 20 miles = 1/2 inch. the distance between two towns on the map is 3 3/4 inches. what is the actual distance between these towns? 150 miles 38 miles 75 miles 135 miles

You eat 8 strawberries and your friend eats 12 strawberries from a bowl. there are 20 strawberries left. which equation and solution give the original number of strawberries?

Which one ? is the answer and how to find this answer