Joke Collection Website - News headlines - Slogan of 20% discount on stationery
Slogan of 20% discount on stationery
Set the original price as A, and it's cheaper to buy 50 * * * for 6 yuan. After he bought 50 pieces, the store gave him a 20% discount (then 0.8A yuan per piece after the discount), so the equation can be listed as: 50A-50X(0.8A)= 6 yuan, solution, 50x0.2A = 6, 10A = 6, so a =
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