27. Kalyani and Sravani have some chocolates with each of them. If Kalyani gives Sravani four chocolates, Sravani will have twice the number of chocolates as Kalyani. Instead if Sravani gives Kalyani two chocolates, both of them will have equal number of chocolates with them. How many chocolates did Kalyani and Sravani have initially?
Sol:- Let, Kalyani has x chocolates and Sravani has y chocolates; given, y+4 = 2(x-4); y-2 = x+2; x= 16; y= 20;