Answer:
350000$
Step-by-step explanation:
Tey had 10000 tickets.
30% of 10000 is 0,3*10000=3000, so 3000 tickets they sold for 20$, it is 3000*20$=60 000$.
40% of 10000 is 4000 tickets. These tickets they sold for 35$ so it is 4000*35$=140000$.
So, they sold 3000+4000=7000. They had 10000-7000=3000 tickets to sell on the door for 50$.
3000*50$=150000$
They earn:
60000$+140000$+150000$= 350000$