[tex]10 \frac{3}{4} = \frac{10*4+3}{4} = \frac{43}{4} [/tex]
[tex]5 \frac{3}{8} = \frac{5*8+3}{8} = \frac{43}{8} [/tex]
[tex] \frac{43}{4} : \frac{43}{8} = \frac{43}{4} * \frac{8}{43} = \frac{8}{4} =2[/tex]
=>Bradul este de doua ori mai inalt ca pinul.