Four friends

Four friends shared the money. Vasek got 1/4 of the total amount. Tonda received 1/3 of the rest of the money, Joe got a half from the second residue and Jirka left 80. How much money get together?

Correct answer:

x =  320

Step-by-step explanation:

x/4+(x-x/4)/3+(x-(x/4+(x-x/4)/3))/2+80=x

3x = 960

x = 320

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