Q: In this task, you need to provide the correct option for a given problem from the provided options.
Problem: if a student loses 5 kilograms , he will weigh twice as much as his sister . together they now weigh 104 kilograms . what is the student ' s present weight in kilograms ?
Options: a ) 70 , b ) 71 , c ) 72 , d ) 73 , e ) 74
A:
b