Serentasmarjerieviz
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If 2/3 of a cake can serve 10 persons,how many persons will a whole cake can serve?

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Riza1viz
[tex]\frac{ 2 }{3} \ of \ the \ cake \ can \ serve\ - \ 10 \ persons \\ 1 \ of \ a \ cake \ can \ serve \ - \ x \ persons \\\\x=(1\cdot 10):\frac{2}{3}=10\cdot \frac{3}{2}=15 \\ \\Answer : \ 1 \ of \ a \ cake \ can \ serve \ 15 \ persons.[/tex]