Answer:
85.5
Step-by-step explanation:
57 + 57/2 = 57 + 28.5 = 85.5
Answer:
Your friend complete 1 level per 9 hours.
You complete 5 levels in 45h so you get 1 lv per 9h 45/9=5
Say x is the number of books third graders read, the equation would be;
x + 2599 = 4628
to solve;
x = 4628 - 2599
x = 2029 books third graders read
