brandoncarter2002
21.07.2019 •
Mathematics
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)
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Ответ:
Ответ:
B. Kendra should have divided by 2 instead of multiplying by 2 in the denominator.
Step-by-step explanation:
In Kendra’s class, 40 percent of the students earned an A on the math test.
Let the total students in the class be = x
So, as per the situation given, we can say that
x = 50
Hence, there are 50 students in the class.
We can cross check this as:
So, Kendra surely did a mistake.
Kendra should have divided 100 by 2. But she multiplied by 2.
Ответ:
Step-by-step explanation: 2 out of 5 parts will be used to purchase the computers for this new library