Respuesta :
Answer:
40
Step-by-step explanation:
to make 17 a fourth multiply it by 4, = 68
the original number of books in the library was 28
68-28 = 40
40 = number of books added to make 17 a fourth
Answer:
40
Step-by-step explanation:
to make 17 a fourth multiply it by 4, = 68
the original number of books in the library was 28
68-28 = 40
40 = number of books added to make 17 a fourth