the average weight of 10 persons increases by 4.2 kg when a new person comes in place of one of them weighing 65 kg. what might be the weight of the new person? Choose the correct answer:	A) 107 kg	B) 80 kg	C) 120 kg	D) 90 kg	E) 100
<gadget id="calculator">10 * 4.2</gadget>
<output>42</output>

<gadget id="calculator">65 + 42</gadget>
<output>107</output>

<result>A</result>
the average weight of 10 persons increases by 4.2 kg when a new person comes in place of one of them weighing 65 kg. what might be the weight of the new person?
add(65, multiply(10, 4.2))
"solution total weight increased = ( 10 x 4.2 ) kg = 42 kg . weight of new person = ( 65 + 42 ) kg = 107 kg . answer a"