Ms. Carter has 30 boxes of books. Half of the boxes have 25 books and the other half have 50 books. How many books does she have in all?

Respuesta :

15 x 25 = 375
15 x 50 = 750

375 + 750 = 1,125

She has 1,125 books. 
25*15 = 375
50*15 = 750
375 + 750 = 1125