Leticia's cat weighs 12.6 pounds. Her dog weighs 3.8 times as much as her cat. What does Leticia's dog weigh in pounds?

 

dog equals cat times 3.8  

 

dog  =  (3.8)(12.6)  =  47.88  

 

Since the factors were accurate to only one decimal place, 

we can't expect the product to be more accurate than that,

so the answer should be rounded to  47.9 pounds  

_.

Just as an FYI :

    12.6 is three significant figures      3.8 is two significant figures

                               by the 'rules' the answer can have no more than two significant figures

                                 so if using significant figures, the answer would be 48 pounds