George went to school for 216 days in a full year. if his attendance in 60%, find the number of days on which the school was opened.

Given:
days present = 216 days
percentage of presence = 60%

Find the total number of days the school was opened.

216 days is the part of a whole. 60% is the percentage of the part to the whole.

To get the whole, we need to divide the part by its percentage

216 ÷ 60% = 360 days

The school was opened for 360 days.

its already in the simplest form