6 computers, each working at the same constant rate, together can process a certain amount of data in 9 days. how many additional computers, each working at the same constant rate, will be needed to process the same amount of data in 6 days? Choose the correct option
A) 3  B) 5  C) 6  D) 9  E) 12
<gadget id="calculator">1 / 6</gadget>
<output>1/6 = around 0.166667</output>

<gadget id="calculator">6 * (1/6)</gadget>
<output>1</output>

<gadget id="calculator">1 / 9</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">1 / (1/9)</gadget>
<output>9</output>

<gadget id="calculator">9 - 6</gadget>
<output>3</output>

<result>A</result>
6 computers, each working at the same constant rate, together can process a certain amount of data in 9 days. how many additional computers, each working at the same constant rate, will be needed to process the same amount of data in 6 days?
subtract(divide(multiply(6, divide(const_1, 6)), divide(const_1, 9)), 6)
explanation : if six computers require 9 days to process the data , thats a total of 54 computer - days the product of 6 and 9 . if you change the number of computers or the number of days , 54 will have to remain the product , whether that means 54 days of one computer or one day with 54 computers . in 6 days , the number of computers is : 6 c = 54 c = 9 9 computers is 3 more than the 6 that it took to do the job in 9 days , so the correct choice is ( a ) .