Sumwise

What is 40% off 40?

40% off 40 = 24 (you save 16)

Sale price
24
You save
16
You pay
60%
Original
40

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: 40% of 40 = 0.4 × 40 = 16
  2. Take it off the price: 40 − 16 = 24
  3. Check: Add the saving back: 24 + 16 = 40.

Another method. In one step: you pay 60% of the price, so 0.6 × 40 = 24. Both methods always give the same answer.

In a spreadsheet: =40*(1-40%). 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 40% off, you pay 60% of the price: 24 instead of 40, a saving of 16.

Shopping: an item marked $40 with 40% off costs $24 at the till, before any sales tax.

Stacked discounts

40% off followed by another 40% off is 64% off in total, not 80%: the second discount applies to the lower price.

Related results

Results for nearby numbers
10% off 40

10% off 40 = 36 (you save 4)

15% off 40

15% off 40 = 34 (you save 6)

20% off 40

20% off 40 = 32 (you save 8)

25% off 40

25% off 40 = 30 (you save 10)

30% off 40

30% off 40 = 28 (you save 12)

50% off 40

50% off 40 = 20 (you save 20)

The other way round: 40% of 40. Two discounts do not add up: 40% off and then another 40% off leaves 14.4, not 8, because the second discount is taken of the lower price.

Practice

8% off 17
Show answer

8% off 17 = 15.64 (you save 1.36)

52% off 51
Show answer

52% off 51 = 24.48 (you save 26.52)

80% off 66
Show answer

80% off 66 = 13.2 (you save 52.8)

73% off 34
Show answer

73% off 34 = 9.18 (you save 24.82)

26% off 21
Show answer

26% off 21 = 15.54 (you save 5.46)

57% off 72
Show answer

57% off 72 = 30.96 (you save 41.04)

Calculate another

How answers are calculated and checked: methodology.

Questions

What is 40% off 40?

40% off 40 is 24: you save 16. Formula and steps for the sale price.

How much do I save with 40% off 40?

16. That is 40% of 40.

What was the price before 40% off if I paid 24?

40. Divide what you paid by 0.6, the share of the price that is left.