The original price of the item is $10b.
Given that new price=$3b and discount=70%.
We need to find the original price.
The basic way to calculate a discount is to multiply the original price by the decimal form of the given percentage rate. To calculate the sale price of any item, we need to subtract the discount from the original price.
Let the original price be x.
Now, x-70% of x=3b
⇒x-0.7x=3b
⇒0.3x=3b
⇒x=$10b
Therefore, the original price is $10b.
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