Two numbers are in the ratio 3 : 4. If their L.C.M. is 36. what is sum of the numbers?	Choose the correct choice from the following choices:
A) 21  B) 56  C) 76  D) 84  E) 85
Explanation:   Let the numbers be 3x and 4x   LCM of 3x and 4x = 12x (Since LCM of 3 and 4 is 12. Hence LCM of 3x and 4x is 12x)   Given that LCM of 3x and 4x is 36   =&gt; 12x = 36   =&gt; x = 36/12= 
<gadget id="calculator">36/12</gadget>
<output>3</output>
3   Sum of the numbers= 3x + 4x   = 7x   3  + 4= 
<gadget id="calculator">3  + 4</gadget>
<output>7</output>
7x= 7 x 3 = 21   21nswer: Option 21
<result>A</result>
Two numbers are in the ratio 3 : 4. If their L.C.M. is 36. what is sum of the numbers?