How do I calculate the original price from a sale price?

Original = Sale Price ÷ (1 - Discount%/100). If something is $60 after 25% off, original = 60 ÷ 0.75 = $80.

Are two 25% discounts the same as 50% off?

No! Two successive 25% discounts give 43.75% total, not 50%. The second discount applies to the already-reduced price.

Discount Formula on CalcAll — free educational content with detailed examples.

How do I calculate the original price from a sale price?: Original = Sale Price ÷ (1 - Discount%/100). If something is $60 after 25% off, original = 60 ÷ 0.75 = $80.
Are two 25% discounts the same as 50% off?: No! Two successive 25% discounts give 43.75% total, not 50%. The second discount applies to the already-reduced price.