Please help this is for my missing math homwwork ASAP

Question

The circle graph shows how Tremaine divided his time on the computer last week.

 

Tremaine used the computer for a total of 30 hours last week. How many more hours did Tremaine use the computer to play games than to do research?

Answer 1

25% of 30 hours = 30/4 = 7.5 hours on games

5% of 30 hours = 30/20 = 3/2 = 1.5 hours on research

7.5 is 6 hours more than 1.5

He spent 6 hours more on games than research