4 p.m to 8 p.m is 4 hrs.....so she worked 4 regular hrs 8 p.m. to 1 a.m is 5 hrs...she she worked 5 hrs for 1.5 times as much
4x + 5(1.5x) = 92 4x + 7.5x = 92 11.5x = 92 x = 92 / 11.5 x = 8 <==== so she charged $ 8 per hr from 4 pm. to 8 pm. and (8 * 1.5) = $ 12 per hr for hrs after 8 p.m
