7.9 questions left (not sure about this answer but I hope it’s right)
I believe the answer is $17.50, she earned $30 off of $600 meaning she had a 5% interest rate and 5% of 350 is $17.50
1 Correct!
2 Correct!
3 Correct!
4 Correct!
5 Correct!
1/4 of $160 is $40. 3/10 of $120 is $36.
5/21 of 84 is $20.16. This leaves him with $63.84.