The jones family attends for $47.00 with two adults and three kids. The switch family attends when some friends are in town $74.75 with three adults and five kids. How much does the Ramirez family have to pay with four adult sons and four kids?

Set up a system of equations.

that means:

2a+3k=47

3a+5k=74.75

Which means

6a+9k=141

6a+10k=149.5

If we subtract we get that

-1k=-8.5

One kid costs 8.5

Plug this back into the equation and you get that 25.5+2a=47. That means adults cost 10.75

Kids: 8.5

Adults: 10.75