Heena’s father paid an electric bill of Rs 385.70 out of a 500 rupee note. How much change should he have received?

If 10% of an electricity bill is deducted, Rs 45 is still to be paid. How much was the bill ?

Ramesh purchased a book worth ₹ 146.75 from a bookseller and gave him a 500-rupee note. How much balance did he get back?

A person invested some amount at the rate of 12% simple interest and a certain amount at the rate of 10% simple interest. He received yearly interest of Rs 130. But if he had interchanged the amounts invested, he would have received Rs 4 more as interest. How much did he invest at 12% simple interest? (a) Rs 400 (b) Rs 500 (c) Rs 700 (d) Rs 800

A grocer hasa sale of Rs. 3,425, Rs. 3,810, Rs. 3,155 and Rs. 3,610 in 4 consecutive days. How much sale should he have in the 5th day so as to get an average sale of Rs. 3,500?

X and Y entered into partnership with Rs. 700 and Rs. 600 respectively. After 3 months X withdrew 2/7 of his stock but after 3 months, he puts back 3/5 of what he had with drawn. The profit at the end of the year is Rs. 726. How much of this should X receive ?