Sumwise

What is 15% off 10?

15% off 10 = 8.5 (you save 1.5)

Sale price
8.5
You save
1.5
You pay
85%
Original
10

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: 15% of 10 = 0.15 × 10 = 1.5
  2. Take it off the price: 10 − 1.5 = 8.5
  3. Check: Add the saving back: 8.5 + 1.5 = 10.

Another method. In one step: you pay 85% of the price, so 0.85 × 10 = 8.5. Both methods always give the same answer.

In a spreadsheet: =10*(1-15%). 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 15% off, you pay 85% of the price: 8.5 instead of 10, a saving of 1.5.

Shopping: an item marked $10 with 15% off costs $8.5 at the till, before any sales tax.

Stacked discounts

15% off followed by another 15% off is 27.75% off in total, not 30%: the second discount applies to the lower price.

Related results

Results for nearby numbers
10% off 10

10% off 10 = 9 (you save 1)

20% off 10

20% off 10 = 8 (you save 2)

25% off 10

25% off 10 = 7.5 (you save 2.5)

30% off 10

30% off 10 = 7 (you save 3)

40% off 10

40% off 10 = 6 (you save 4)

50% off 10

50% off 10 = 5 (you save 5)

The other way round: 15% of 10. Two discounts do not add up: 15% off and then another 15% off leaves 7.22, not 7, because the second discount is taken of the lower price.

Practice

3% off 39
Show answer

3% off 39 = 37.83 (you save 1.17)

32% off 85
Show answer

32% off 85 = 57.8 (you save 27.2)

59% off 33
Show answer

59% off 33 = 13.53 (you save 19.47)

36% off 21
Show answer

36% off 21 = 13.44 (you save 7.56)

28% off 15
Show answer

28% off 15 = 10.8 (you save 4.2)

35% off 51
Show answer

35% off 51 = 33.15 (you save 17.85)

Calculate another

How answers are calculated and checked: methodology.

Questions

What is 15% off 10?

15% off 10 is 8.5: you save 1.5. Formula and steps for the sale price.

How much do I save with 15% off 10?

1.5. That is 15% of 10.

What was the price before 15% off if I paid 8.5?

10. Divide what you paid by 0.85, the share of the price that is left.