1  A retailer buys a radio for $ 225. His overhead expenses are $ 15. He sells the radio for $ 300. The profit percent of the retailer is

2  A, B, C enters into a partnership. A invests some money at the beginning, B invests double the amount after 6 months and C invests thrice the amount after 8 months. If the annual profit be $ 9000, then C’s share is

3  M, S, R rented a video cassette for 1 week at a rent of $ 350. If they used it for 6 hrs, 10 hrs and 12 hrs respectively, what is the rent paid by R?

4  If 6(A’s capital) = 8(B’s Capital) = 10(C’s capital), then the ratio of their capital is

5  An alloy contains zinc and copper in the ratio 5:8 and another alloy contains zinc and copper in the ratio 5:3. If equal amount of both alloy are melted together, then the ratio of zinc and copper in the resulting alloy is

6  A sum of $ 53 is divided among A,B,C, in such a way that A gets $ 7 more than what B gets and B gets $ 8 more than what C gets. The ratio of their shares is

7  A fraction bears the same ratio to 1/27 as 3/7 bears to 5/9. The fraction is

8  Out of three given numbers, the first one is twice the second and three times the 3^{rd}. if the average of those numbers is 88, then the difference between 1^{st} and the 3^{rd} is

9  The average of 8 readings is 24.3, out of which the average of first 2 is 18.5 and that of next 3 is 21.2. if the 6^{th} reading is 3 less than the 7^{th} and 8 less than 8^{th}, then what is the sixth reading?

10  The average weight of 19 students was 25 kg. By the admission of a new student the average weight reduced to 24.8 kg. The weight of the new student is
