Sumwise

What is 70% off 40?

70% off 40 = 12 (you save 28)

Sale price
12
You save
28
You pay
30%
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: 70% of 40 = 0.7 × 40 = 28
  2. Take it off the price: 40 − 28 = 12
  3. Check: Add the saving back: 12 + 28 = 40.

Another method. In one step: you pay 30% of the price, so 0.3 × 40 = 12. Both methods always give the same answer.

In a spreadsheet: =40*(1-70%). 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 70% off, you pay 30% of the price: 12 instead of 40, a saving of 28.

Shopping: an item marked $40 with 70% off costs $12 at the till, before any sales tax.

Stacked discounts

70% off followed by another 70% off is 91% off in total, not 100%: 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)

40% off 40

40% off 40 = 24 (you save 16)

50% off 40

50% off 40 = 20 (you save 20)

The other way round: 70% of 40. Two discounts do not add up: 70% off and then another 70% off leaves 3.6, not 0, because the second discount is taken of the lower price.

Practice

14% off 80
Show answer

14% off 80 = 68.8 (you save 11.2)

44% off 80
Show answer

44% off 80 = 44.8 (you save 35.2)

97% off 50
Show answer

97% off 50 = 1.5 (you save 48.5)

3% off 88
Show answer

3% off 88 = 85.36 (you save 2.64)

1% off 92
Show answer

1% off 92 = 91.08 (you save 0.92)

78% off 3
Show answer

78% off 3 = 0.66 (you save 2.34)

Calculate another

How answers are calculated and checked: methodology.

Questions

What is 70% off 40?

70% off 40 is 12: you save 28. Formula and steps for the sale price.

How much do I save with 70% off 40?

28. That is 70% of 40.

What was the price before 70% off if I paid 12?

40. Divide what you paid by 0.3, the share of the price that is left.