Answer :
You can write this algebraically. 20% of a number is that number multiplied by 0.2, so 300 = 0.2x
Dividing by 0.2 (i.e. multiplying by 5) gives us x being 1500.
So 1500 light bulbs are produced in an hour.
Dividing by 0.2 (i.e. multiplying by 5) gives us x being 1500.
So 1500 light bulbs are produced in an hour.