Answer:
The student's current average score will be 69.2
Step-by-step explanation:
Let first test be TEST A: which is 20 of total and secures 62
Let second test be TEST B: which is 20 of the total marks and has secured 83.
Let third test be TEST C: which is 20 of total and has secured 91.
And now the TEST D which is 25 of total and has secured 88.
Therefore, by multipying across
[tex]{0.2}\times{62}[/tex] = 12.4
[tex]{0.2}\times{83}[/tex] = 16.6
[tex]{0.2}\times{91}[/tex] = 18.2
[tex]{0.25}\times{88}[/tex] =22
Now, by adding the scores to get the average score
We get, 69.2.