can someone tell me if my work its correct?

Question

1. 
   

i got these totals.

1. $8304

2. 8 and 120 lost

Answer 1

1. Let x= the cost of car itself

Sale tax 8% = 0.08x

Then we have x + 0.08x = 3800

1.08 x = 3800

Divide both sides by 1.08

x = 3800/1.08

x = 3518.518

So, the car itself cost $3518.52

2 Let x = the number of games that you are playing

If you won 40% = 0.40x

We have 0.40x = 8

Divide both sides by 0.40, we get

x = 20

So, you was playing 20 games.

And the number of games that you lost is

20 - 8 =12 games