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?

Question

A. 20/100 .


B. 80/100 .


C. 0.20 .
D. 0.08 .

Answer 1

To find the percentage of homework Thomas still needs to complete, we first determine how many problems he has left. He started with 20 problems and has completed 4.

Total problems: 20
Problems completed: 4
Problems remaining: 20 - 4 = 16

Next, we calculate the fraction of the homework that remains:

Remaining fraction = Problems remaining / Total problems = 16 / 20

To convert this fraction into percentage, we multiply by 100:

(16/20) * 100 = 80%

So, Thomas still needs to complete 80% of his homework.

Now, let's check which option represents this percentage:

A. 20/100 represents 20% (not correct).
B. 80/100 represents 80% (correct).
C. 0.20 represents 20% (not correct).
D. 0.08 represents 8% (not correct).

The answer is: B. 80/100.