It is: 18 -5.4 = 12.6 dollars
18 percent of 30 is 5.4
30% = 3⁄10
70 - 30% = 49
18/0.6 = 30 Therefore, 18 is 60 percent of 30.
18/30=3/5
12.6 reduced by 30% = 8.82
30% = 3⁄10
3/10
18 is 30% of 60
30% of 18 = 5.4
60% of 30 is 18 (0.6 x 30), so you go into the exam with 18 points. A perfect score on the exam would result in an overall grade of 83% (70 + 18).