Each Ferris wheel in paradise park has 4 seats. Each seat in a Ferris wheel can hold 15 people. How many people can ride 177 Ferris wheels at the same time?
There are 4 seats in each Ferris wheel. 
Each seat can hold 15 people. 
That means each Ferris wheel can hold 60 people at the same time. 

Now we just need to multiply 60 by 177 to find out how many people can ride 177 Ferris wheels at the same time. 

60 x 177 = 10,620