**Concept: The question tests on fundamentals of P/L(Profit/Loss)**

**Solution:**

The price on any goods before selling it is called the Marked price or Label price.

Let the Marked price on each toy = x. Therefore the total MP = 12x

SP of a toy sold at 20% discount = 0.8x.

SP of 8 toys = 0.8x * 8 = 6.4x

SP of a toy sold at an additional 25% discount = 0.8x * 0.75 = 0.6x.

SP of 4 Toys = 4 * 0.6x = 2.4x

Total SP = 6.4x + 2.4x = 8.8x = 2112

Therefore x = 240

Total MP = 12 * 240 = 2880

Now the profit is 10%. Therefore CP * 110/100 = 2112

CP = 2112∗100/110=1920

When there is no discount MP = SP = 2880

Profit% = SP−CP/CP∗100=2880−1920/1920∗100=50

**Option B**