20
70% of 25 is 17.5. That is you will pass with 7 (7.5) questions wrong.
25 Questions
6 of them.
x/84 = 0.70x = 59 right; that means 84-59 = 25 wrong
Divide how many you got right by 25. Multiply the product by 100.
20
70% of 25 is 17.5. That is you will pass with 7 (7.5) questions wrong.
25 Questions
6 of them.
x/84 = 0.70x = 59 right; that means 84-59 = 25 wrong
22 of them.
Designate the number of correctly answered questions as r. From the problem statement, r = 92 % of 28 = 0.92(28) = 25.76. If partial credit is allowed, this probably means that there were 25 questions completely right and one more that was considered three-fourths right.
25 questions missed
You must get 19 questions right on a 25 question test to earn a score of 75%
30/100*25 =7.5 so you must not get more than 7 questions wrong to score 70%
The percent that 35 is increased from 25 is (35 - 25) / 25 * 100, or 40 percent.