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cupcakes and bagels for Petya, Apya and Kolya

Source: Caucasus 7.3

April 26, 2019
system of equationsalgebra

Problem Statement

Petya bought one cake, two cupcakes and three bagels, Apya bought three cakes and a bagel, and Kolya bought six cupcakes. They all paid the same amount of money for purchases. Lena bought two cakes and two bagels. And how many cupcakes could be bought for the same amount spent to her?