Sumwise

What is 40% off 15?

40% off 15 = 9 (you save 6)

Sale price
9
You save
6
You pay
60%
Original
15

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 15 = 0.4 × 15 = 6
  2. Take it off the price: 15 − 6 = 9
  3. Check: Add the saving back: 9 + 6 = 15.

Another method. In one step: you pay 60% of the price, so 0.6 × 15 = 9. Both methods always give the same answer.

In a spreadsheet: =15*(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: 9 instead of 15, a saving of 6.

Shopping: an item marked $15 with 40% off costs $9 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 15

10% off 15 = 13.5 (you save 1.5)

15% off 15

15% off 15 = 12.75 (you save 2.25)

20% off 15

20% off 15 = 12 (you save 3)

25% off 15

25% off 15 = 11.25 (you save 3.75)

30% off 15

30% off 15 = 10.5 (you save 4.5)

50% off 15

50% off 15 = 7.5 (you save 7.5)

The other way round: 40% of 15. Two discounts do not add up: 40% off and then another 40% off leaves 5.4, not 3, because the second discount is taken of the lower price.

Practice

8% off 73
Show answer

8% off 73 = 67.16 (you save 5.84)

48% off 22
Show answer

48% off 22 = 11.44 (you save 10.56)

23% off 60
Show answer

23% off 60 = 46.2 (you save 13.8)

90% off 4
Show answer

90% off 4 = 0.4 (you save 3.6)

73% off 11
Show answer

73% off 11 = 2.97 (you save 8.03)

7% off 65
Show answer

7% off 65 = 60.45 (you save 4.55)

Calculate another

How answers are calculated and checked: methodology.

Questions

What is 40% off 15?

40% off 15 is 9: you save 6. Formula and steps for the sale price.

How much do I save with 40% off 15?

6. That is 40% of 15.

What was the price before 40% off if I paid 9?

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