find the single discount equivalent to a series discount of

find the single discount equivalent to a series discount of 30/10.

Solution

100 - 30 = 70%

100 - 10 = 90 %

in decimal form these are 0.7,and 0.9 respectively

let x be the original cost
multiply these together

0.7 * 0.9 = 0.63 = 63%

In order to get the discount percentage you must
take 100% and subtract out the new cost %(63%)= 37%