A lady has only 25-paisa and 50-paisa coins in her purse. If she has 50 coins in all totalling 19.50, how many coins of each kind she have?

Explanation

Let no. of 50 paisa and 25 paisa coins be `x` and` y.`

given=>`x+y=50`...(1)

also=>`50x+25y=1950=>2x+y=78`...(2)

solving (1) and (2) we get `x=28` and `y=22`