This can be solved by using the following formula: .85=68/x We must solve for x. To do that, we make it x=68/.85 The resulting answer is 80. 68 is 85% of 80.
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To find 80 percent of a number, multiply the number by 0.8. In this instance, 0.8 x 85 = 68. Therefore, 80 percent of 85 is equal to 68.
100*(80-68)/80 = 85%
To find 80 percent of a number, multiply the number by 0.8. In this instance, 0.8 x 85 = 68. Therefore, 80 percent of 85 is equal to 68.
You would need to answer 68 questions correctly.
An A- may be different in some marking systems, but is often used to indicate a grade of 85 to 90 percent.