Sarita buys two old Samsung phones and three Mi mobile phones for `40200. If she sells the Samsung phones at a 10% profit and the Mi Phones at a 20% profit then her total profit is `5640. The cost price of the Mi Phone is:

Q: Sarita buys two old Samsung phones and three Mi mobile phones for `40200. If she sells the Samsung phones at a 10% profit and the Mi Phones at a 20% profit then her total profit is `5640. The cost price of the Mi Phone is: