Answer:
$245
Step-by-step explanation:
350× 0.30 = 105 dollars off
350-105 = 245
245
350/10=35
35=10%
35x3=105
105=30%
350-105=245
4b=y-10
He got 400 coins because there are 100 cents in a dollar. 100*20=2000. 2000/5=400!
I hope this helps! Have a great rest of your day!