For every four white balls taken out one black ball is taken out so it would be the 52 white ball
Answer:
8 Books
Step-by-step explanation:
First find how many she had before buying 8 more-
12 - 8 = 4
Then multiply that by 2
4 x 2 = 8
The had 8 books to begin with
Answer:
31.42 m
Step-by-step explanation:
10* π= 31.415( which can round to 31.42)