Question

What would be the expenditure in 30 days at the rate of 50 paise per unit, if a bulb of 100 W is used five hours per day?
1) Rs. 10.50
2) Rs. 8.50
3) Rs. 7.50
4) Rs. 9.50

Answer 1

3) Rs. 7.50...........................

Answer 2

the correct option is 3