Correct Answer - Option 4 : Rs.1000
Given:
Selling price = marked price × (100 - discount %)/100
Calculation:
Let marked price of one mobile and second mobile be Rs.a and Rs.(2200 - a) respectively.
Selling price of one mobile = a × 90/100 = Rs.9a/10
Selling price of second mobile = (2200 - a) × 88/100 = Rs.(1936 - 22a/25)
⇒ 1936 - 22a/25 - 9a/10 = 156
⇒ a = 1000
∴ The marked price of one mobile is Rs.1000.