Thomas has finished 4 problems of his weekly math homework. If he needs to solve a total of 20 problems, which of the following shows the equivalent of the percentage of his math homework Thomas still needs to complete?
A. 20/100
B. 80/100
C. 0.20
D. 0.08
To find the equivalent percentage, we can use the formula: (number of problems completed / total number of problems) * 100%.
In this case, Thomas has finished 4 problems out of a total of 20 problems.
Thus, the equivalent percentage of his math homework that he still needs to complete is: (4 / 20) * 100% = 20%
Therefore, the answer is: A. 20/100.