On each of the last three quizzes Harold worked 24 out of 30 problems correctly keeping the same great how many problems should Herald work correctly on a 50 problem exam
Since Harold consistently works 24 out of 30 problems correctly, we can determine his success rate as 24/30 = 0.8.
Let's calculate the number of problems Harold should work correctly on a 50 problem exam:
50 * 0.8 = <<50*0.8=40>>40.
Therefore, Harold should work correctly on 40 problems on a 50 problem exam.