running at the same constant rate, 6 identical machines can produce a total of 360 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) 1800  C) 2400  D) 10800  E) 10900
<gadget id="calculator">360 / 6</gadget>
<output>60</output>

<gadget id="calculator">60 * 4</gadget>
<output>240</output>

<gadget id="calculator">240 * 10</gadget>
<output>2_400</output>

<result>C</result>
running at the same constant rate, 6 identical machines can produce a total of 360 bottles per minute. at this rate, how many bottles could 10 such machines produce in 4 minutes?
multiply(multiply(divide(360, 6), 4), 10)
"let the required number of bottles be x . more machines , more bottles ( direct proportion ) more minutes , more bottles ( direct proportion ) machines 6 : 10 : : 360 : x time ( in minutes ) 1 : 4 6 x 1 x x = 10 x 4 x 360 x = ( 10 x 4 x 360 ) / ( 6 ) x = 2400 . answer : c"