Mother,her daughter and her grand child weighs 150 kg. daughter and her daughter(child) weighs 60 kg. child is 1/5th of her grand mother. What is the age of the daughter?  Choose the correct choice from the following answers
A) 46 B) 47 C) 42 D) 49 E) 50
mother + daughter + child = 150kg   daughter + child = 60kg   mother = 150 - 60= 
<gadget id="calculator">150 - 60</gadget>
<output>90</output>
90kg   child= 1/5th of mother = (1/5)*90= 
<gadget id="calculator">(1/5)*90</gadget>
<output>18</output>
18kg   So now daughter= 120 -(mother + child) = 150 - (90+18)= 
<gadget id="calculator">150 - (90+18)</gadget>
<output>42</output>
42kg   ANSWER:42
<result>C</result>
Mother,her daughter and her grand child weighs 150 kg. daughter and her daughter(child) weighs 60 kg. child is 1/5th of her grand mother. What is the age of the daughter?