Rajiv has two courses to prepare for final examination. Each hour of study, he devotes to course A is expected to return Rs.600 in terms of long range job benefits. Each hour devoted to course B Is expected to return Rs.300 in terms of long range job benefits. the stores are closed and Rajiv has only 15 chewing gums. He finds that he consumes one chewing gum every 20 minutes while studying course B and every 12 minutes while studying course A. Time is running short only four hours are left to prepare. Rajiv feels that he must devote atleast two hours to study. using linear programming, determine an optimal policay for Rajiv that would maximise his returns in terms of long range job benefits.