Soni and Misha are exchanging stamps with each other. At the start, Soni has \(12\) stamps of type \(X\) and \(15\)

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Soni and Misha are exchanging stamps with each other. At the start, Soni has \(12\) stamps of type \(X\) and \(15\) stamps of type \(Y\) while Misha has \(20\) stamps of type \(X\) and \(10\) stamps of type \(Y.\) They have no other stamps of any other type with them apart from these. After the exchange, how many stamps of type \(Y\) remain with Misha in total?

1) During the exchange, Soni gave exactly \(5\) stamps of type \(X\) to Misha and received exactly \(7\) stamps of type \(Y\) from Misha

2) After the exchange, number of stamps with Soni has increased by \(4\)

The OA is E