Telangana PSC Group 4 Secretarial Ability 2018 Paper 2

In a monthly electricity bill, some part is fixed and other part is calculated based on the actual consumption of power per unit price. In a particular month for 500 units, the total electricity bill was Rs. 2,000 and in another month for 650 units, the total bill was Rs. 2,450. What will be the electricity bill, if the power consumption is 725 units?