Answer:
2 hours and 30 minutes is more than 10% of the day
Step-by-step explanation:
First its necessary to identify the 10% of a day. This can be calculate using a rule of three knowing that a day have 24 hours and represent the 100% of the day, then how many hours represent the 10%. This is:
24h ---------------- 100%
x -----------------10%
where x is the number of hours that represent the 10% of the day. The value of x is:

Now, 2.4 hour is the sum of 2 hours and 0.4 hours, so we need to know how many minutes are 0.4 hours. This is calculate with a rule of three in which 1 hour have 60 minutes, then how many minutes have 0.4 hours. This is:
60 minutes ----------- 1 hour
y ------------ 0.4 hour
Where y is the number of minutes in 0.4 hour. The value of y is:

So, 10% of a day is equivalent to 2 hours and 24 minutes.
Finally, 2 hours and 30 minutes is more than 2 hours and 24 minutes or 2 hours and 30 minutes is more than 10% of the day