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?
20/100
80/100
0.20
0.08
To find the percentage of Thomas's math homework that he still needs to complete, we can subtract the number of problems he has already solved from the total number of problems and then divide that difference by the total number of problems.
Total number of problems = 20
Number of problems solved = 4
Remaining problems = Total number of problems - Number of problems solved = 20 - 4 = 16
Percentage of math homework still to be completed = Remaining problems / Total number of problems = 16 / 20 = 0.8 = 80/100
Therefore, the equivalent of the percentage of Thomas's math homework that he still needs to complete is 80/100.