Had he earned any money before that? In what way?

Vijay had some money but needed more to pay his household bills. The bills were for Rs. 1260. He had to borrow Rs. 637 from his friend to pay the bills. If he does not have any money left after paying the bills, find the amount that he had with him.

A money-lender, lends a part of his money at 10% per annum and the rest at 15% per annum. His annual income is 1900. However, if he had interchanged the rate of interest on the two sums, he would have earned 200 more. The amount lent will fetch what 15%?

The more he earned the more he want to earn.

Ram walks to school from home every morning and it takes him 30 minutes.Once on his way he realized that he had forgotten his physics book at home.If he continued walking to school at the same speed,he would be there 12 minutes before the bell.But he went back home for the physics book and reached the school 6 minutes after the bell.Assuming he had walked all the way with his usual speed,the fraction of the way to school he had covered till the moment he turned back is

George spent 25% of the money he had on lunch and 60% of the remaining money on dinner. If he then had $9.00 left, how much money did he spend on lunch and dinner?

Arun invested a sum of money at a certain rate of simple interest for a period of 4 yrs,had he invest for six year the total interst earned by him would have bean 50% more than the earlier interest amount. What was the rate of interest per cent per annum?