On the first day of June, there were about 15.01 h of daylight in a city. Five months later, there were about 9.60 h of daylight. What was the percent decrease?

36.04 % decrease

Step-by-step explanation:

given initial daylight hours: 15.01 hrs

final daylight hours (5 months later) : 9.60 hrs

change in daylight hours = final - initial = 9.6 - 15.01 = - 5.41

(or 5.41 hour decrease)

percentage decrease = (change in daylight hours / initial daylight hours) x 100%

= (5.41 / 15.01) x 100%

= 36.04 % decrease