Question

raman sells two wristwatch for ₹1200 each .on one watch he gains 20% and on the other he Loses 20% what are the cost prices of each and what is his total gain or Loss percentage ?

Answer 1

total gain or lost percent is 0

Answer 2

s.p of 1st watch=₹1200
gain =20%
c.p = 100/100+gain% ×sp
cp= 100/120×1200
cp= ₹1000
s.p of 2nd watch= ₹1200
loss=20%
cp= 100/100-loss ×sp
cp= 100/80×1200
cp of 2nd watch=1500
now total cp= ₹(1000+1500)
cp=₹2500
total sp= ₹(1200+1200)
sp= ₹2400
loss= sp-cp
loss=₹100
loss%= loss/cp×100
loss= 100/2500×100
loss=4%