Answer:

MRP=3333.33

Step-by-step explanation:

Given,

what price should a shopkeeper mark on an article costing him Rs. 2500 to gain 20% after allowing a discount of 10%

CP=2500

profit=20%

Discount=10%

MRP=?

SP=((100+gain)*CP)/100

SP=(120*2500)/100

SP=3000

Discount will be given on MRP

(100-Discount)%*MRP=SP

(100-10)%*MRP=3000

90%*MRP=3000

MRP=3333.33