**Question:**

**In Kendra’s class, 40 percent of the students earned an A on the math test. Twenty students earned an A. Kendra needs to find out how many students are in her class. Kendra’s work is shown below.
StartFraction part Over whole EndFraction = StartFraction 40 divided by 2 Over 100 times 2 EndFraction = StartFraction 20 Over 200 EndFraction
What mistake did Kendra make?
Kendra should have multiplied by 4 in both the numerator and the denominator.
Kendra should have divided by 2 instead of multiplying by 2 in the denominator.
Kendra should have added 40 and 20.
Kendra should have the part to whole equation written as 40****************/**