If a book about animals has a sale price of $3.50 after a 70% discount is taken, what was the original price? A. $8.50
B. $12
C. $13.50
D. $11.67

$11.67

Step-by-step explanation:

Sale Price = $3.50 , Rate = 70% or 0.7

Selling Price = Original Price - Discount

Discount = Rate x Original Price

Substitute the formula for Discount, we'll have

Selling Price = Original Price - (Rate x Original Price)

3.50 = Original Price - (0.7*Original Price)

Considering original price = 1,

3.50 = 1 Original Price - 0.7 Original Price

3.50 = 0.3 * Original Price Divide both sides of 0.3

3.50 / 0.3 = Original Price

Original Price = $11.67

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