Question

se stie ca a pe b =0,8 aflati 3a+2b supra 4b

Answer 1

[tex]\frac{a}{b}=0,8\Rightarrow \frac{a}{b}=\frac{4}{5}\Rightarrow \frac{a}{4}=\frac{b}{5}=k\Rightarrow a=4k,b=5k\\ \frac{3a+2b}{4b}=\frac{12k+10k}{20k}=\frac{22k}{20k}=\boxed{\frac{11}{10}}[/tex]