Question

70% of the days in June were sunny. how many days were sunny?

Answer 1

your answer will be 30% my trick is subtract 100% from 70%

Answer 2

There are 30 days in June. So 30 days represent 100% of the days. We have:

30 ----- 100%
x ------ 70% 100x= 2100 x= 21

Additionally, you can do to know the percentage of a number: 30 multiplied by 0.7 you will have 21. 0.7 means you are calculating 70% of the number you are multiplying.