Answer:
35
Explanation:
Total books = 175
Books delivered to the preschool = 1/5 x 175 = 35
Books delivered to the preschool = 35
Books delivered to camp = 2/5 x 175
Books delivered to camp = 70
Books delivered to the 2 libraries = 175 - 35 - 70
Books delivered to the 2 libraries = 70
Books delivered to 1 library = 70 ÷ 2
Books delivered to 1 library = 35