Respuesta :

Answer:

30 books

Step-by-step explanation:

He sold 75 books, and 40% of them were in his collection.

Find 40% of 75.

Just do 75 * 0.4 and you'll get 30

Answer:

188?

Step-by-step explanation:

40% of 188 is 75

75.2/188 = 40%