By selling 90 ball pens for 180, a person loses 20%. How many ball pens should he sell for 96, so as to have a gain of 20%?
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Answer:
32 ball pens
Step-by-step explanation:
SP of 90 ball pens is =180 Rs. at the loss of 20%.
CP of 90 ball pens is=180*100/80
=18*100/8
=18*25/2
=9*25
CP =225
CP of 1 ball pen is=225/90
=2.5 Rs.
He want to gain 20%.
The new SP is=2.5*120/100
=3 Rs.
So he will sell 20%=96/3
=32 ball pens.
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