A shopkeeper gives a full bottle of soft drink in return for five empty bottles. A guy has 77 empty bottles and he can use them to get full soft drink bottles.
How many filled bottles will he be able to collect? Choose the most appropriate option.
A) 15  B) 25  C) 28  D) 19  E) 16
77 empty bottles = 15 full bottles + 2 empty bottles   15 full bottles will give him 15 empty bottles more.   15 + 2= 
<gadget id="calculator">15 + 2</gadget>
<output>17</output>
17   17 empty bottles= 3 full bottles + 2 empty bottles   3 full bottles will give him 2 empty bottles more.   3 + 2= 
<gadget id="calculator">3 + 2</gadget>
<output>5</output>
5   5 empty bottles= 1 filled bottle     15 + 3 + 1= 
<gadget id="calculator">  15 + 3 + 1</gadget>
<output>19</output>
19   Thus we will be able to get 19 full bottles of soft drink.
<result>D</result>
A shopkeeper gives a full bottle of soft drink in return for five empty bottles. A guy has 77 empty bottles and he can use them to get full soft drink bottles.
How many filled bottles will he be able to collect?