GROSS PROFIT =  sale + closing stock- opening stock-purchse-direct cost

eg = 300000+20000-100000-90000-35000= 95000

now if  closing stock is undervalued by 10000 , closing is 20000-10000=10000

& opening stock is overvalued by 10000= 100000+10000=110000

now GP = 300000+10000-110000-90000-35000=75000

answer is (d)  G.P. will decrease by Rs.20,000
 

answer is 20000 of gross profit,decreases as closing stock decreases then g.p decreases.

since opening stock is over valued by 10,000 it will decrease gp by 10,000. next closing stock is undervalued by 10,000 it will again decrease gp by 10,000... so totally gp goes down by 20,000.....

everyone above is right .. 

Ans. is G.P. will decrease by Rs. 20,000/=

Gp will decrease by 20000

GP will decrease by rs 20,000 (option c)

GP will decrease by Rs. 20,000

GP IS DECREASE BY RS 20000.

GP will decrease by rs 20,000

option C is correct majority of answers right here GP will decrease by 20000.

GP will be decrease by 20000