A loss of 20% is incurred when 6 articles are sold for a

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A loss of 20% is incurred when 6 articles are sold for a rupee. To gain 20% how many articles should be sold for a rupee?

Let S.P. = 100% = 6
On 20% loss ,

C.P. = 80% =		6	× 80 =	24
		100		5

To gain 20% ,

Now, 120% =	24
	5

100% =	24 × 100	= 4
	5 × 120