The hardcover version of a book weighs twice as much as its paperback version. The hardcover book and the paperback together weigh 4.2 pounds. Which system of equations can be used to find h, the weight of the hardcover book, and p, the weight of the paperback?

h = p − 4.2
h = 2p

h = 4.2 − p
p = 2h

h = p − 4.2
p = 2h

h = 4.2 − p
h = 2p

Question

The hardcover version of a book weighs twice as much as its paperback version. The hardcover book and the paperback together weigh 4.2 pounds. Which system of equations can be used to find h, the weight of the hardcover book, and p, the weight of the paperback?



h = p − 4.2  
h = 2p 



 
h = 4.2 − p 
p = 2h 

 
h = p − 4.2 
p = 2h 

 
h = 4.2 − p 
h = 2p

seeing.in.pixels · Answer

the last one.
Also, try putting this in the math section next time :)