A man purchased 150 pens at the rate of Rs 12 per pen He sold 50 pens at a - Maths -

Question

A man purchased 150 pens at the rate of Rs 12 per pen He sold 50
pens at a gain of 10% At what gain percent must he sell the
remaining pens, so as to gain 15% on the whole transaction?

Seshank Achyutuni · Accepted Answer

CP=150*12
=1800
g%=15%
gain=15% of 1800
=15*18
=270
SP=CP+Gain
=1800+270
=2070
CP of 50 pens=50*12
=600
G%=10%
Gain=60
SP=660
SP of remaining 100 pens =2070-660
=1410
CP=12*100
=1200
G=210
G%=G/CP*100%
=17 5%

A man purchased 150 pens at the rate of Rs 12 per pen. He sold 50 pens at a gain of 10%. At what gain percent must he sell the remaining pens, so as to gain 15% on the whole transaction?