0.7+0.7=100% Weiviel % sind 1.3+0.7?

0,7 +0,7 =    1,4      ->   100 %

1,3 +0,7 =      2        ->      x %        x =2*100/1,4 = 142,86  [%] (gerundet)

$${\frac{{\mathtt{2}}{\mathtt{\,\times\,}}{\mathtt{100}}}{{\mathtt{1.4}}}} = {\frac{{\mathtt{1\,000}}}{{\mathtt{7}}}} = {\mathtt{142.857\: \!142\: \!857\: \!142\: \!857\: \!1}}$$

Gruß radix !