X's marks are 70, 90, 65, 85 and 75. What marks he must get on the next test to raise her average to 80 ?
X's marks are 70, 90, 65, 85 and 75. What marks he must get on the next test to raise her average to 80 ? Correct Answer 95
Total marks in 6 test = (6*80) = 480 Total marks in 5 test = (70 + 65 + 90 + 75 + 85) = 385 So, marks in the 6th test = (480 - 385) = 95