Math
posted by Jim .
A box of dog food would feed 5 dogs for 4 days. How long would it feed 8 dogs ?

Cross multiply and solve for x.
5/4 = 8/x 
Cross multiplying will not work. It asks to subtract the amount not add it.
posted by Jim .
A box of dog food would feed 5 dogs for 4 days. How long would it feed 8 dogs ?
Cross multiply and solve for x.
5/4 = 8/x
Cross multiplying will not work. It asks to subtract the amount not add it.