[tex]\it 30\%\ din\ 50 = \dfrac{30}{100}\cdot50=\dfrac{1500}{100} =15\ lei\ (pentru\ fratele\ mai\ mic )\\ \\ \\ 50-15=35\ lei\ (restul)\\ \\ \\ 20\%\ din\ 35 = \dfrac{20}{100}\cdot35=\dfrac{700}{100} =7\ lei\ (pentru\ bunic )\\ \\ \\ 35-7=28\ lei\ (mai\ are\ Raluca\ la\ final)[/tex]