Sumwise

What is 20% off 30?

20% off 30 = 24 (you save 6)

Sale price
24
You save
6
You pay
80%
Original
30

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 30 = 0.2 × 30 = 6
  2. Take it off the price: 30 − 6 = 24
  3. Check: Add the saving back: 24 + 6 = 30.

Another method. In one step: you pay 80% of the price, so 0.8 × 30 = 24. Both methods always give the same answer.

In a spreadsheet: =30*(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: 24 instead of 30, a saving of 6.

Shopping: an item marked $30 with 20% off costs $24 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 30

10% off 30 = 27 (you save 3)

15% off 30

15% off 30 = 25.5 (you save 4.5)

25% off 30

25% off 30 = 22.5 (you save 7.5)

30% off 30

30% off 30 = 21 (you save 9)

40% off 30

40% off 30 = 18 (you save 12)

50% off 30

50% off 30 = 15 (you save 15)

The other way round: 20% of 30. Two discounts do not add up: 20% off and then another 20% off leaves 19.2, not 18, because the second discount is taken of the lower price.

Practice

5% off 24
Show answer

5% off 24 = 22.8 (you save 1.2)

31% off 41
Show answer

31% off 41 = 28.29 (you save 12.71)

64% off 71
Show answer

64% off 71 = 25.56 (you save 45.44)

26% off 83
Show answer

26% off 83 = 61.42 (you save 21.58)

96% off 47
Show answer

96% off 47 = 1.88 (you save 45.12)

91% off 81
Show answer

91% off 81 = 7.29 (you save 73.71)

Calculate another

How answers are calculated and checked: methodology.

Questions

What is 20% off 30?

20% off 30 is 24: you save 6. Formula and steps for the sale price.

How much do I save with 20% off 30?

6. That is 20% of 30.

What was the price before 20% off if I paid 24?

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