Question 1026510
number of right answers=x
number of wrong answers are 32-x
10x-5(32-x)=20
10x-160+5x=20
15x=180
x=12;  he made 120
32-x=20; he lost 100. Total is 20 cents.
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to earn more than a dollar
10x-5(32-x)>100
10x-160+5x>100
15x > 260
x > 17 (18 will work but 17 won't)
17 should not quite work
17*10=170
15*5=85
The result is 85
18 will be 180-70=110