Original price - 82

Discount - 10%

Sale price - ?

82 = 100%

10% discount (90% of original price)

To find 90% find 10% and then subtract it from 82)

10% = 82/10 (8.2)

80-8.2=

71.8

So you'd multiply 82 by 0.10 which would give you 8.2. Then you subtract 8.2 from 82 which would give you 73.8.

the other way you could do it it subtracting 10% from 100% which is 90%.

Then you would multiply the 90% by 82, giving you the same answer