The original population of ducks in the lake was 95.
The population decreased 40% in one year.
To determine the population of this year, you have to calculate how many ducks does 40% represent. To do so, multiply the original amount by 0.4
[tex]95\cdot0.4=38[/tex]This means that in one year the number of ducks was reduced by 38.
Subtract 38 from 95 to determine the actual population
[tex]95-38=57[/tex]The actual population is 57 ducks
You have to draw in the number line the original and the actual populations:
