9; in the two pints there are eight 1/4 pints, and the extra 1/4 makes nine 1/4 pints.
If you can give me more info, I can solve this for you, please write out the complete problem.
First you have all ten books, but then every time after, you loose one because you can't put the same book in the group twice.
10 * 9 * 8 * 7 = 5040 groups
They can help you find a common denominator by the bottoms of each fraction if the top ones don't have the same denominator.
Answer:
C. 12
Step-by-step explanation:
With the rule of 72, you would divide 72 by the periodic interest rate to get the number of years for the principal to double
72 ÷ 6 = 12
