Answer:
10.8
Step-by-step explanation:
first, you subtract 552 and 120 to find the remaining of pages there is left.
552-120=432
now, since we know how much is left, all we have to do is divide it with 40.
432÷40=10.8
so, it will take 10.8 days to finish reading the book.
*edit
Answer: the answer is 194
2c + 6 = 30
2c = 24
c = 12