Describe two methods for finding the sale price of an item that is discounted 30%. which method do you prefer? Explain.

one can take the price of the item before the discount is applied and subtract that from the percentage off and get the cost of the item.

I find this is the most effective way.

another method could be if one turned the percentage into a decimal it could be subtracted from the cost of the item.

Answer Link

jessicapieterse jessicapieterse · Answer 2 · 2019-08-20T03:08:46-04:00

Answer:

1. Find the value of the discount amount, and subtract from the original.

2. Find the value of the item after discount by using 100%-30%.

I prefer the second, as it is faster.

Step-by-step explanation:

1. Find the value of the discount amount, and subtract from the original.

Say y is the amount you pay after the discount, and x is the original price, the calculation will look like this:

The value of the discount is 30% of x, which is equal to 0.3x.

subtract that from the original value to find y:

y = x - 0.3x

2. Find the value of the item after discount by using 100%-30%.

The amount left over after subtraction thirty % is 70%

Thus,

y = 0.7 x