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. 40 / 2 = 20 100 x 2 = 200 what mistake did kendra make? (the / is meant as a division symbol) a. kendra should have multiplied by 4 in both the numerator and the denominator. b. kendra should have divided by 2 instead of multiplying by 2 in the denominator. c. kendra should have added 40 and 20. d. kendra should have the part to whole equation written as 100/40 (100 over 40)