You can put this solution on YOUR website! Let x = the # of bags she initially sold.
==> Total sales was 52x initially. The total sales after selling 4 more bags is 4*$72 = $288
==>
==> 52x + 288 = 57(x + 4)
==> 52x + 288 = 57x + 228
==> 60 = 5x ==> x = 12, the number of bags initially sold.
Thus, x + 4 = 12 + 4 = 16 bags sold all in all.
You can put this solution on YOUR website! A woman sold some bags at average cost of $52.when She sold another 4 more bags at average cost of $72, the average cost of all bags become $57. How many bags she sold all?
let she sell X bags
cost by selling x bags =52x
another 4 bags at average of $72
cost for 4 bags will be =4x72= $288
total number of bags sell will be x+4
total cost of sell for 56 bags at average of $57=(x+4)x57
as per given conditions
52X+288=(x+4).57
52x+288 =57x +228
52x-57x=228-288
-5x=-60
x=12
