Respuesta :
Answer:
[tex]the \: unit \: rate \: is \: \frac{27 \: pre \:}{1 .5\: hr} = 18 \frac{presents}{hour} [/tex]
Presents per hour!
27 presents in 1.5 hours =
18 presents per hour
27 presents in 1.5 hours =
18 presents per hour