Correct Answer - D
( d) According to question, SP of 6 article = Rs. 1
SP of 1 article = Rs. `(1)/(6)`
Loss of 20% is incurred ( 20 % हानि हुई ) =100-20=80
When 6 article are sold ( 6 वस्तुए बेचीं जाती है )
CP of 1 article ( 1 वस्तु का क्रय मूल्य ) `=(1)/(6)xx(100)/(80)` to gain 20% `=(1)/(6)xx(100)/(80)xx(120)/(100)=(1)/(4)`
Article should be sold Rs. 1 to gain 20% is =4 ( वस्तु पर लाभ कमाने के लिए उसे 1 रुपये में 4 वस्तु बेचनी होगी )