Explanation:

Certainly! Let's break down each scheme to determine the maximum discount percentage:

- a) Two successive discounts of 22% and 25%:

- Calculate final price after two discounts on a $100 product:

- First discount: $100 - 22% = $78

- Second discount: $78 - 25% = $58.50

- Total discount percentage = 41.5%.

- b) Buy 3, get 2 free:

- Mentions receiving 5 products for the price of 3.

- Discount percentage = (2/5) * 100 = 40%.

- c) Buy 5, get 4 free:

- Offers 9 products for the price of 5.

- Discount percentage = (4/9) * 100 ˜ 44.44%.

- d) Buy 4, get 3 free:

- Get 7 products for the price of 4.

- Discount percentage = (3/7) * 100 ˜ 42.86%.

The maximum discount is given by the "Buy 5, get 4 free" scheme.

Correct Answer: Option:4, c