Respuesta :
There would be exactly twenty problems on the test for her to be able to get 80%.
You know it can't be ten because then that would make it 60% not 80% but if you add the first number of the percentage (8) and multiply it by two it will get you 16 then if you add 4 to that that would make it 20 and 16/20 equals 80%
You know it can't be ten because then that would make it 60% not 80% but if you add the first number of the percentage (8) and multiply it by two it will get you 16 then if you add 4 to that that would make it 20 and 16/20 equals 80%
Answer: There are 20 problems on the test.
Step-by-step explanation:
Since we have given that
Patricia scored 80% on a math test.
She missed 4 problems.
So, 20% of the math test is equal to 4 problems.
Let the total number of problems on the test be x
According to question,
[tex]\frac{20}{100}\times x=4\\\\x=\frac{100}{20}\times 4\\\\x=20[/tex]
Hence, there are 20 problems on the test.
