anushka scored the following marks in five test 87,75,79,68,84. what should she score in the next test so that her average is higher than 80 marks
She has a total of 383 marks.
With 6 tests, a total of 600 marks is possible.
0.8 * 600 = 480
480 - 383 = 97
She needs at least 97 on the next test to get an average of 80.
There u written 383 but there should come 393 OK .
THANKS YOU
To find out the score Anushka needs to achieve in the next test in order to have an average higher than 80 marks, we can follow these steps:
Step 1: Add up the scores she has already obtained
87 + 75 + 79 + 68 + 84 = 393
Step 2: Calculate the total number of tests
Anushka has taken 5 tests so far.
Step 3: Calculate her current average
Average = Total score / Number of tests
Average = 393 / 5 = 78.6
Step 4: Determine the minimum score she needs to increase her average to 80
Let's assume she needs to score "x" in the next test.
New average = (Total score + Score in next test) / (Number of tests + 1)
80 = (393 + x) / (5 + 1)
Step 5: Solve the equation to find the score she needs to achieve
Multiply both sides by (5 + 1):
480 = 393 + x
Subtract 393 from both sides:
x = 480 - 393
x = 87
Therefore, Anushka needs to score at least 87 marks in the next test to have an average score higher than 80 marks.