Sumwise

What is 20% off 80?

20% off 80 = 64 (you save 16)

Sale price
64
You save
16
You pay
80%
Original
80

Sumwise · Maintained by Theo Abbott (pen name) · automated checks · Data: exact arithmetic; unit definitions from NIST SP 811 · Updated · How the checks work

How to work it out

  1. Work out the discount: 20% of 80 = 0.2 × 80 = 16
  2. Take it off the price: 80 − 16 = 64
  3. Check: Add the saving back: 64 + 16 = 80.

Another method. In one step: you pay 80% of the price, so 0.8 × 80 = 64. Both methods always give the same answer.

In a spreadsheet: =80*(1-20%). Taking the percentage of the price gives the saving, not the price you pay. Subtract it, or multiply by the share that is left.

What the result means

After 20% off, you pay 80% of the price: 64 instead of 80, a saving of 16.

Shopping: an item marked $80 with 20% off costs $64 at the till, before any sales tax.

Stacked discounts

20% off followed by another 20% off is 36% off in total, not 40%: the second discount applies to the lower price.

Related results

Results for nearby numbers
10% off 80

10% off 80 = 72 (you save 8)

15% off 80

15% off 80 = 68 (you save 12)

25% off 80

25% off 80 = 60 (you save 20)

30% off 80

30% off 80 = 56 (you save 24)

40% off 80

40% off 80 = 48 (you save 32)

50% off 80

50% off 80 = 40 (you save 40)

The other way round: 20% of 80. Two discounts do not add up: 20% off and then another 20% off leaves 51.2, not 48, because the second discount is taken of the lower price.

Practice

5% off 89
Show answer

5% off 89 = 84.55 (you save 4.45)

43% off 89
Show answer

43% off 89 = 50.73 (you save 38.27)

16% off 70
Show answer

16% off 70 = 58.8 (you save 11.2)

37% off 22
Show answer

37% off 22 = 13.86 (you save 8.14)

75% off 34
Show answer

75% off 34 = 8.5 (you save 25.5)

40% off 75
Show answer

40% off 75 = 45 (you save 30)

Calculate another

How answers are calculated and checked: methodology.

Questions

What is 20% off 80?

20% off 80 is 64: you save 16. Formula and steps for the sale price.

How much do I save with 20% off 80?

16. That is 20% of 80.

What was the price before 20% off if I paid 64?

80. Divide what you paid by 0.8, the share of the price that is left.