100 possible points each week, week 6 avg. is 78%, what is lowest score student must get for next three weeks of 9 week period in order to raise score to 84%

Question

Mrs Cooley gives 100 points each week during a nine week grading period. At the end of the sixth week, Carlos has a 78% average. What is the lowest average score he can receive each week during the remainder of the 9-week grading period in order to raise his average to 84% for the term?

Answer 1

So far Carlos has 468 points (6 x 78)

He needs 756 points (9 x 84)

 

How many more points does he need?

What would he need to get on each of the three weeks?