Ritesh purchased some pens he purchased 7 pens for Rs 10 he sold all the pens and incurred 20% loss at what rate did he sell all the pens?
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cost of 7 pens=10
cost of 1 pen =10/7
loss =20%
SP=10/7×100/(100-20)=1000/(7×80)=1000/560
=25/14
cost of 1 pen =10/7
loss =20%
SP=10/7×100/(100-20)=1000/(7×80)=1000/560
=25/14
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