Question

Of all the species in the world, 4 out of every 5 are insects what percentage of species are insects

Answer 1

80%

Explanation:

So you basically, just make it a ratio. Since a percentage is out of 100, just make the 5 into 100. To get 5 to 100, you times 20. Then you do the same thing to the 4 which you get 80.