Question

1) Calculati 30% din 50
2) Daca 6/x=y/5 atunci determinati valoarea expresiei 128-3xy

Answer 1

1)30% * 50 =30/100 *50 = 30*50/100=3*5=15
2)$\frac{6}{x}= \frac{y}{5} =\ \textgreater \ xy=30$
deci 128-3xy=128-3*30=128-90=38