To mail a package, the rate is 10 cents for the first pound and 5 cents for each additional pound. Two packages weighing 5 pounds and 10 pounds, respectively can be mailed seperately or combined as one package. Which method is cheaper and how much money is saved?
Pick:
A) Combined, with a saving of 10 cents B) Combined, with a saving of 15 cents C) Separately, with a saving of 5 cents D) Combined, with a saving of 5 cents E) Separately, with a saving of 15 cents
5 pounds = 1*10+4*5= 
<gadget id="calculator">1*10+4*5</gadget>
<output>30</output>
30   10 pounds= 1*10+9*5= 
<gadget id="calculator">1*10+9*5</gadget>
<output>55</output>
55   total= 85   15 pound = 1*10+14*5= 
<gadget id="calculator">1*10+14*5</gadget>
<output>80</output>
80   dif. 5   Answer : Combined, with a saving of 5 cents
<result>D</result>
To mail a package, the rate is 10 cents for the first pound and 5 cents for each additional pound. Two packages weighing 5 pounds and 10 pounds, respectively can be mailed seperately or combined as one package. Which method is cheaper and how much money is saved?