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 equivalent of the percentage of his math homework that Thomas still needs to complete, we can subtract the number of problems Thomas has already finished from the total number of problems and then divide that by the total number of problems.
Number of problems Thomas still needs to complete = 20 - 4 = 16
Percentage of math homework still needs to complete = (Number of problems Thomas still needs to complete / Total number of problems) * 100
= (16/20) * 100
= 0.8 * 100
= 80%
So, the equivalent of the percentage of his math homework that Thomas still needs to complete is 80/100, which can also be written as 0.80. Thus, none of the given options is correct.