If a student loses 5 kilograms, he will weigh twice as much as his sister. Together they now weigh 110 kilograms. What is the student's present weight in kilograms? Choose the correct choice from the following options:
A) 71
B) 72
C) 73
D) 74
E) 75
Let x be the weight of the sister.   Then the student's weight is 2x+5.   x + (2x+5) = 110   3x = 105   x = 35 kg   Then the student's weight is 75 kg.   The answer is 75.
<result>E</result>
If a student loses 5 kilograms, he will weigh twice as much as his sister. Together they now weigh 110 kilograms. What is the student's present weight in kilograms?