A sweater that had 40% discount and I saved 20 dollars, what was the price of the sweater

200

Step-by-step explanation:

200-40% = 180

if we were to have 100-40% it would be 60 but since it's 200 it is now less of a % reduced

step-by-step explanation:

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)