Nathan and Steven stacked boxes on a shelf. Nathan lifted 13 boxes and Steven lifted 15 boxes. The boxes that Nathan lifted each weighed 12 lb more than the boxes Steven lifted.

Which expression represents the total number of pounds Nathan lifted?

Let s represent the weight of the boxes that Steven lifted.

A.
13(s +12)

B.
s + 12

C.
15(s + 12)

D.
12(s + 13)

Question

Nathan and Steven stacked boxes on a shelf. Nathan lifted 13 boxes and Steven lifted 15 boxes. The boxes that Nathan lifted each weighed 12 lb more than the boxes Steven lifted.
 
Which expression represents the total number of pounds Nathan lifted?

Let s represent the weight of the boxes that Steven lifted.
 
 A.
13(s +12)
 
 B.
s + 12
 
 C.
15(s + 12)
 
 D.
12(s + 13)

anonymous · Answer

So s represents the weight of the boxes Steven lifted while Nathan carried 12 lb more than Steven. So what does this mean? It means you will have to use addition...(s  + 12). This means that Nathan boxes are 12 more than s (Steven's boxes). And we know Nathan carried 13 boxes in total so we will have to place the 13 outside the parenthesis to later distribute. So the equation would be 13(s + 12).