Chacha buys 4 dozen apples, 2 dozen oranges and 5 dozen guavas for Rs. 420. He distributes the apples and the oranges equally among his two sons. The first son sells the apples for 50% profit and the oranges for 100% profit, having a sale of Rs. 260. The second son sells the apples for 25% loss and the oranges for 50% less, having a sale of Rs. 110. If Chacha sells the guava to break even, find the percentage profit/loss on the guavas.