Rebeckah answered 42 of the 60 questions correctly on a test. Which method should she use to find the percent of questions she answered correctly?

Question

First, subtract 42 from 60 to find the ratio of questions answered correctly to total questions, which is StartFraction 18 Over 60 EndFraction. Then, add 40 to the numerator and denominator to find the percent: StartFraction 58 Over 100 EndFraction = 58 percent.
First, find the ratio of questions answered correctly to total questions, which is StartFraction 42 Over 60 EndFraction. Then, add 40 to the numerator and denominator to find the percent: StartFraction 82 Over 100 EndFraction = 82 percent.
First, subtract 42 from 60 to find the ratio of questions answered correctly to total questions, which is mc025-5.jpg. Then, simplify the ratio to StartFraction 3 Over 10 EndFraction. Finally, multiply the numerator and denominator by 10 to find the percent: StartFraction 30 Over 100 EndFraction = 30 percent.
First, find the ratio of questions answered correctly to total questions, which is StartFraction 42 Over 60 EndFraction. Then, simplify the ratio to StartFraction 7 Over 10 EndFraction. Finally, multiply the numerator and denominator by 10 to get StartFraction 70 Over 100 EndFraction = 70 percent.

Answer 1

To find the percent of questions Rebeckah answered correctly, she should use the following method:

1. Find the ratio of questions answered correctly to total questions, which is $\frac{42}{60}$.
2. Simplify the ratio $\frac{42}{60}$ to $\frac{7}{10}$ by dividing both the numerator and denominator by 6.
3. Multiply both the numerator and denominator by 10 to convert it to a percentage: $\frac{7\times 10}{10\times 10}=\frac{70}{100}$.
4. This means Rebeckah scored 70 percent.

So the correct method is: First, find the ratio of questions answered correctly to total questions, which is $\frac{42}{60}$. Then, simplify the ratio to $\frac{7}{10}$. Finally, multiply the numerator and denominator by 10 to get $\frac{70}{100}=70$.