Astore is having a sale, each customer receives either a 15% discount on purchases under 100% or a 20% discount on purchases of $100 or more. kelly is purchasing some clothes for $96.60 before the discount. she decides to buy the fewest packs of gum that will increase her purchase to over $100. the price of each pack of gum is $0.79. after the discount, how much less will kelly pay by purchasing the clothes and the gum instead of purchasing only the clothes? (assume there is no sales tax to consider.) this is almost due i mark ! a. $1.05b. $1.67c. $3.69d. $3.87