The L.C.M. of 2 numbers is 72. The numbers are in the ratio 2:3. Find their sum? Choose one.
A) 36  B) 40  C) 48  D) 60  E) 56
Let the numbers be 2x and 3x   L.C.M. = 6x   6x = 72   x = 12   The numbers are = 24 and 36   Required sum = 24+36= 
<gadget id="calculator">24+36</gadget>
<output>60</output>
60   Answer is 60
<result>D</result>
The L.C.M. of 2 numbers is 72. The numbers are in the ratio 2:3. Find their sum?