, 30.08.2019 23:00 nina1390

# In march, a customer spent \$8.55 at an office-supply store for some 12-packs of pens. at that time, the store was selling packages of one dozen pens for \$1.35. any customer who bought more than 4 packages, received a discount of \$0.30 on the price of each package in excess of 4 packages. in september, the same customer went back to the store to buy the same number of pens. by then, the price per 12-pack of pens had been raised to \$1.50 each, with the same discount for more than 4 packages. how much more did the customer have to pay in september than in march?

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