If Chameli had Rs.600 left after spending 75% of her money,how much did she have in the beginning?

Nazima is fly fishing in a stream. The tip of her fishing rod is 1.8 m above the surface of water and the fly at the end of the string rests on the water 3.6 m away and 2.4 m from a point directly under the tip of the rod. Assuming that her rod to the fly) is taut, how much string does she have out(see fig)? If she pulls in the string at the rate of 5 cm per second, what will be the heriozontal distance of the fly from her after 12 seconds.

Had Ajita scored 10 more marks in her mathematics test out of 30 marks, 9 times that number would have been the square of her actual marks. How many marks did she get in the test?

Susan invested certain amount of money in two schemes A and B which offer interest at the rate of 8% per annum and 9% per annum, respectively. She received Rs. 1860 as annual interest. However had she interchanged the amount of investments in the two schemes, she would have received Rs. 20 more as annual interest. How much money did she invest in each scheme?

A man bought a certain number of glass vessels for Rs. 600. He broke two of them. Then he sold each of the rest for Rs. 10 more than he had paid for it, thereby gaining Rs. 50 on the whole. How many glass vessels did he buy?

Rani had ₹ 18.50. She bought one ice-cream for ₹ 11.75. How much money does she have now?

Aruna has only Rs. 1 and Rs. 2 coins with her. If the total number of coins that she has is 50 and the amount of money with her is Rs. 75, then the number of Rs. 1 and Rs. 2 coins are respectively,