A machine, working at a constant rate, manufactures 18 dies in 25 minutes. How many dies does it make in 1 hr 15 min?	Select the correct option:
A) 55  B) 53  C) 54  D) 52  E) 50
Change 1 hr 15 min to 75 min. For this, we need to set up a simple proportion of Dies per time   18/25= S/75   The absolutely worst thing you could do at this point in the problem is to cross-multiply. That would be a supremely unstrategic move. We can cancel the common factor of 25 in the two denominators.   18/1 = S/3   S = 3* 18= 
<gadget id="calculator">3* 18</gadget>
<output>54</output>
54   The machine would be 54 dies in 1 hr 15 min.   Answer: 54
<result>C</result>
A machine, working at a constant rate, manufactures 18 dies in 25 minutes. How many dies does it make in 1 hr 15 min?