  Sorry!
I try it again

Dear R Users!


I have a dataframe with duplicatecases. Var1 duplicated by var2. 



var1 var2  var3  var4  var5
1        4       500     1    2
1        3       200     2    5
1        8       125     1    9
2        2       120     2    52
2        6        22      1    20
2        9        400    1    22
3        1        100    2    8
3        2        200    5    40
4        8        20      1    60

I want to delete duplicate ones from var1 which have low rank at var2, and keep that case which has highest rank at var2. I would like to keep the Whole row (with the other variables: 

var1     var2     var3    var4    var5    
1          8          125     1         9
2          9           400    1        22
3          2           200    50     40
4           8          200     1      60 Thanks Ag 


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