Let's solve the problem step by step.

a. What part of the original cost is the discount?

The discount is the difference between the original price and the sale price.

$\text{Discount} = \text{Original Price} - \text{Sale Price}$

Given:

• Original Price = P 200.00
• Sale Price = P 120.xx (Let's call the last two digits "yy")

So,

$\text{Discount} = 200.00 - 120.yy$

This is the part of the original cost that is the discount.

b. What % of the selling price was the discount?

To find the percentage of the selling price that was the discount, use the formula:

$\text{Discount Percentage} = \left(\frac{\text{Discount}}{\text{Original Price}}\right) \times 100\%$

Substituting the values:

$\text{Discount Percentage} = \left(\frac{200.00 - 120.yy}{200.00}\right) \times 100\%$

This will give the discount as a percentage of the original price.

If you provide the exact sale price (including the last two digits), I can give you the precise discount amount and percentage.

Would you like to proceed with the calculation by specifying the sale price?

Follow-Up Questions:

1. What would be the discount if the sale price was P 150.50?
2. How would the percentage change if the sale price was P 100.00?
3. What is the percentage discount if the sale price is exactly 50% of the original price?
4. If Jane received a further 10% discount on the sale price of P 120.yy, what would be the final price?
5. How much more would Jane have paid if the original price was P 250.00?
6. How do you calculate the final price after a discount is applied?
7. What would be the new discount percentage if the original price was increased to P 220.00?
8. If another store offers a 40% discount, how does it compare to Jane's discount?

Tip:

When calculating percentages, always ensure that the base value (the denominator) accurately represents the context of the problem.