suppose both bands decide to combine and perform as one band. What fraction of the band members will play a brass instrument?
At Carter school, 1/3 students play percussion, 2/5 brass, 4/15 woodwind. At Reagan School, 1/3 play woodwind, 1/6 percussion, and 1/2 brass. We know that Carter has 30 total musicians and Reagan has 18 total musicians.