Let the price of 1 chocolate be x and that of 1 cone be y

4x + 3y = 50

3x + 4y = 48

Adding these, we get 7x + 7y = 98 or x + y = 14

Subtracting these, we get x - y = 2

Now adding these 2 equations, we get 2x = 16, or x = 8

Substituting in either equation, we get y = 6

The price of 1 chocolate is 8 and that of 1 cone is 6

Hence we can buy 7 cones (Rs 42) and 1 chocolate (Rs 8)

Therefore, in Rs 50 we can buy 8 pieces.