Problema Solution
There are 3,000 books in three stacks. The first stack has 10 more than the second stack. The third stack has half as many as the second stack. How many books are in the third stack?
Answer provided by our tutors
Let there be x books in the second stack. Then, the number of books in the first stack = x + 10, and the number of books in the third stack = x/2
Total number of books = x + 10 + x + x/2 = 5x/2 + 10
Now, 5x/2 + 10 = 3000
5x/2 = 3000 - 10
5x/2 = 2990
5x = 2990 * 2
5x = 5980
x = 5980/5
x = 1196
Number of books in the third stack = 1196/2 = 598