<image>To enhance residents’ awareness of saving electricity, the city’s electricity price follows a "tiered" billing system. The relationship between the monthly electricity bill $$y($$CNY$$)$$ and the electricity consumption $$x($$kWh$$)$$ is shown in the figure.  
 $$(1)$$ In June, Mr. Li’s family used $$50$$ kWh. How much electricity bill do they need to pay? $$(2)$$ In July, Mr. Li’s family paid an electricity bill of $$68$$ CNY. Calculate the electricity consumption of Mr. Li’s family for July.