Question

Krubasoe takes a 40-problem test and gets 37 of them correct. What percent of the problems does she get incorrect? ANS. (use decimal) _________. %

Answer 1

getsGiven data:

Let A =Total number of problem test Krubasoe takes = 40

B= number Krubasoe gets correct = 37

C= number Kurbasoe gets incorrect = (A - B) = 40 - 37 = 3

Hence, %problems she get incorrect will be

$\begin{gathered} =\text{ }\frac{\text{number she gets incorrect }}{\text{total number of problem test}}\times100\text{ \%} \\ =\frac{3}{40}\times100\text{ \%= 7.5\%} \end{gathered}$

Therefore, the percent of problems she gets incorrect is 7.5%