Running at the same constant rate, 6 identical machines can produce a total of 240 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?  Choose the correct choice from the following answers: A) 648 B) 1,800 C) 1,600 D) 10,800 E) 64,800
6 machines produce 240 bottles per minute;   1 machine produces 240/6= 
<gadget id="calculator">240/6</gadget>
<output>40</output>
40 bottles per minute;   10 machines produce 40*10= 
<gadget id="calculator">40*10</gadget>
<output>400</output>
400 bottles per minute;   In 4 minutes 10 machines produce 400*4=1,600 bottles.   Answer: 1,600.
<result>C</result>
Running at the same constant rate, 6 identical machines can produce a total of 240 bottles per minute. At this rate, how many bottles could 10 such machines produce in 4 minutes?