1. An ore contains 25% of an alloy that has 90% iron. Other than this, in the remaining 75% of the ore,there is no iron. How many kilograms of the ore are needed to obtain 60 kg of pure iron ?

1) 275 kg 2) 225 kg 3) 266.66 kg 4) 235.25 kg 5) None of these

2. If the selling price of a dozen apple is equal to cost price of 9 apples. Find gain or loss percent ?

1) 20 % loss 2) 75 % gain 3) 20 % gain 4) 25 % gain 5) None of these

5. A boat goes 15 km upstream in 80 minutes. The speed of the stream 5 km/hr. The speed of the boat in still water is –––

1) 17.5 km/hr. 2) 18 km/hr. 3) 16.25 km/hr. 4) 8.5 km/hr. 5) None of these

8. At the centres of two circle, two arcs of equal length subtend angles of 45^{0}and 75^{0 }respectively. The ratio of the radii of the two circles is –––

1) 5 : 4 2) 5 : 3 3) 3 : 5 4) 4 : 5 5) None of these

9. An aluminium sphere of 210 m. radius is drawn into a cylindrical wire of length 105 km. What is the radius of the wire ? (up to two digit after decimal)

1) 10.84 m 2) 11.74 m 3) 17.50 m 4) 9.76 m 5) None of these

10. Ram started a business investing `40000. After one year he invested another `50000 and Shyam also joined him with a capital of `80000. If the profit earned in 2 years from the starting of business was `98700. Then, find the share of Shyam in the profit ?

1) `35800 2) `36616 3) `37540 4) `37600 5) None of these

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