Răspuns :
55% din x este 1,95, deci
[tex]\dfrac{55}{100}\cdot x =1,95\Rightarrow x=\dfrac{195}{55}=3,(54)[/tex]
[tex]\dfrac{55}{100}\cdot x =1,95\Rightarrow x=\dfrac{195}{55}=3,(54)[/tex]
45x/100 +1.95 =x => 1.95=55x/100 deci x=1.95*100/55=3.(54)