## Sunday, October 30, 2016

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 450and 750 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