if the cost of a dozen soaps is rupees 153.60 will be the cost of 13 such soaps
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dozen soaps have 12 soaps and their cost is 153.60
therefore,cost of each soap=153.60÷12=12.8
if cost of 12 soaps is 153.60
then cost of 13 soaps=cost of dozen of soaps+cost of each soap
153.60+12.8=166.40
therefore,cot of 13 soaps is 166.40rs
therefore,cost of each soap=153.60÷12=12.8
if cost of 12 soaps is 153.60
then cost of 13 soaps=cost of dozen of soaps+cost of each soap
153.60+12.8=166.40
therefore,cot of 13 soaps is 166.40rs
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