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ANTONII [103]
3 years ago
11

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

Mathematics
2 answers:
Mekhanik [1.2K]3 years ago
6 0
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.
mojhsa [17]3 years ago
5 0

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:

<em>y = x - 0.3x</em>

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

The amount left over after subtraction thirty % is 70%

Thus,

<em>y = 0.7 x</em>

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