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Q. In a library, the ratio of number of story books to that of non-story books was 4:3 and total number of story books was 1248. When some more story books were bought, the ratio became 5:3. Find the number of story books bought.

Q. Rs. 8400 is divided among A, B, C and D in such a way that the shares of A and B, B and C, and C and D are in the ratios of 2:3, 4:5 and 6:7 respectively. The share of A is

Q. a : b : : 3 : 5, b : c : : 4 : 3 and c : d : : 4 : 5, a : d = ?

Q. If selling price of 12 pens is equal to the cost price of 18 pens, find the profit percent.

Q. Chaman sells 40 fans at 10% profit. He wants a total of 20% profit on the entire sale. Since he got 160 fans at rate of Rs. 100 each, at what profit must he sell the remaining fans?

Q. Sam borrowed some money from his friend at simple interest of 6% per annum. He returned his friend Rs. 15600. After how much time did Sam return the money if he borrowed Rs. 12000?

Q. If Harsh sold a match ticket for Rs.340 at a profit of 25%, at what price did he purchased the ticket?

Q. The dummy source or destination in a transportation problem is added to

Q. Two numbers are in ratio 2:3. If 2 be subtracted from the first and 2 be added to the second, the ratio becomes 1:2. Find the sum of the numbers.

Q. Find A:B:C:D when A:B = 2:3 ; B:C = 7:9 ; C:D = 5:7