Bill got a test. There were 80 problems. He got 75% of them correct.
To solve this, we need to multiply the total of the problems by 75%.
We already know that 75% = 75 / 100.
Then
Number of Correct problems = 80 problems * 75 / 100
In this case, we can multiply 80 * 75 and then divide the result by 100:
Number of Correct problems = (80 problems * 75) / 100
Number of Correct problems = ( 6000 problems ) / 100
If we divided this by 100, we have:
The number of Correct problems = 60 problems.
Therefore, the number of correct problems were 60 problems.
