Final answer:
To determine how much more the chemistry textbook weighs, we convert both weights to the same denominator and find that the chemistry textbook is 1/10 of a pound heavier than the geometry textbook.
Step-by-step explanation:
To find out how much more the chemistry textbook weighs than the geometry textbook, we need to compare their weights. The chemistry textbook weighs 7/10 of a pound, and the geometry textbook weighs 3/5 of a pound.
First, let's ensure that our fractions have a common denominator. The least common denominator for 10 and 5 is 10. The weight of the geometry textbook in tenths is 6/10 of a pound (since 3/5 is equivalent to 6/10).
Now, subtract the weight of the geometry textbook from the weight of the chemistry textbook:
7/10 - 6/10 = 1/10 pound
So, the chemistry textbook weighs 1/10 of a pound more than the geometry textbook.