Nancy is packing jars into boxes. Each box has the same number of jars. She has 15 jars and packs them into 3 boxes. Then she 40 jars and packs them into 8 boxes. How many boxes will she need to pack 70 jars?

Respuesta :

15 (3) + 40(8) + 70
75 + 400 + 70
445