=cHeM iN Me=

The question said that 97% of the oil from the inlet has been removed, which they'll go to the exit solvent right???so...to get the exit solvent, 0.97 times (percent of oil times feed).yup.got it. that value is also equal to V1X1...mmmm...so, how can we get the X1????
Done alot of try n error and also rumus ajaran sesat...but.......
still can't get the answer!!!
I'm doomed, am i???