Afeed of 90% r and 10% q enter a system containing a recycle stream and a purge stream, as well as a reactor and a separator. the material entering the reactor undergoes the reactions: conversion in the reactor is 40%. the separator is able to remove all a and b from any remaining r and q: the stream containing only a and b is 75% a. the stream from the separator containing r and q is split into the recycle stream (which feeds back into the system before the reactor) and the purge stream, at a ratio of 4 moles recycled /moles purged. all compositions are in mole percent. determine the moles of each species leaving the process.