[tex]a) 5kg.............15lei \\ 7kg..................x \\ \\ x= \frac{7*15}{5}= 7*3 \\ \\ \boxed{x=21 \ lei}[/tex]
[tex]b)4m..........1l.............24h \\ 12m...........1l..............x \\ \\ x=\frac{4*24}{12}= 4*2 \\ \\ \boxed{x=8h}[/tex]
[tex]c)8c...................32lei \\ 13c.....................x \\ \\ x=\frac{13*32}{8}= 13*4 \\ \\ \boxed{x=52 \ lei}[/tex]
[tex]d)5t.........1o.........10z \\ 7t............1o..........x \\ \\ x= \frac{5*10}{7}= \frac{50}{7} \\ \\
\ \boxed{x=7zile \ 1h}[/tex]
[tex]e)1r..........1b...............16h \\ 4r.............1b................x \\ \\ x=\frac{1*16}{4} \\ \\ \
\boxed{x=4h}[/tex]
[tex]f)12p...............36lei \\ 17p....................x \\ \\ x=\frac{12*36}{17}= \frac{432}{17} \\ \\ \boxed{x=25,41 lei}[/tex]