if a student loses 6 kilograms, he will weigh twice as much as his sister. together they now weigh 126 kilograms. what is the student ' s present weight in kilograms?  Choose the correct choice from the following answers.
A) 82 B) 84 C) 86 D) 88 E) 90
<gadget id="calculator">126 - 6</gadget>
<output>120</output>

<gadget id="calculator">120 / 3</gadget>
<output>40</output>

<gadget id="calculator">126 - 40</gadget>
<output>86</output>

<result>C</result>
if a student loses 6 kilograms, he will weigh twice as much as his sister. together they now weigh 126 kilograms. what is the student ' s present weight in kilograms?
subtract(126, divide(subtract(126, 6), const_3))
"let x be the weight of the sister . then the student ' s weight is 2 x + 6 . x + ( 2 x + 6 ) = 126 3 x = 120 x = 40 kg then the student ' s weight is 86 kg . the answer is c ."