Answers

2014-02-03T12:09:03+01:00
The girl's salary= x
x-(1/2x+1/2x*1/5)=320
x-(5/10x+5/10x*2/10)=320
x-(5/10x+10/100x)=320
x-(5/10x+1/10x)=320
x-6/10x=320
4/10x=320
x=800
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