Answer:
Let the test scores be x1, x2, x3, x4
(x1 + x2 + x3)/3 = 88
x1 + x2 + x3 = 264
(x1 + x2 + x3 + x4)/4 = 90
264 + x4 = 360
x4 = 360-264
x4 = 96
Therefore he should get 96 marks in his 4th test to raise his mean test score to 90
The mean score is the total of all scores divided by the total no. Of tests
Hope this helps!
Its 30, i multiplied 6x5 and got 30 so im sure its the answer
Answer:
where is the diagram?
Step-by-step explanation:
What aboout it? please clarify.
