Answer:
A. 340 books
B. 34 books
Step-by-step explanation:
A. History books represent 20% of the total books, so we can multiply it by 5 to get the total books
68 * 5 = 340 total books
B. Biographies represent 10% of the total books so simply move the decimal over one place.
340.
34.0
34 total books
Hope this helps
