Question

Vreau URGENT rezolvarea completa la 2 , va rog :) !

Answer 1

invers propportional inseamna ca
$\frac{a}{ \frac{1}{0,2} } = \frac{b}{ \frac{1}{0,5} }=k$
a=$\frac{k}{0,2} =5k$
b=$\frac{k}{0,5} =2k$
a-b=12
5k-2k=12
3k=12
k=12:3
k=4

a=5k=20
b=2k=8