 
<translate> Idan teburin C yana da $20 fiye da teburin A, to teburin C yana da $20 + $40 = $60. Teburin caca A da C suna da $60 + $40 = $100. Tebur B yana da kuɗi sau biyu fiye da tebur C, ma'ana tebur B yana da $60 * 2 = $120. Tare, teburin caca uku suna da $ 120 + $ 100 = $ 220. Amsar ita ce: 220. <eng> If table C had $20 more than table A, then table C had $20 + $40 = $60. Roulette tables A and C had $60 + $40 = $100. Table B had twice as much money on it as table C, meaning table B had $60 * 2 = $120. Together, the three roulette tables had $120 + $100 = $220.
The answer: 220. 