1.A trader earns a profit of 20% after giving a discount of 10% on the marked price. How much percent more than cost price should he mark his marked price?
(a)30
(b) 33(1/3)
(c) 34(2/3)
(d) 35
(e) None of these
2.If the compound interest on a certain sum of money for 2 years at 4% per annum be Rs. 2448, what would be the simple interest on the same sum for 2 years at the same rate?
(a) Rs. 2500
(b) Rs. 2400
(c) Rs. 2360
(d) Rs. 2250
(e) None of these
3.The circumference of base of a circular cylinder is 6π cm. The height of the cylinder is equal to diameter of the base. Maximum amount of water that can be poured in the cylinder is
(a) 54π cm3
(b) 36πcm3
(c) 0.054 π cm3
(d) 0.54 π cm3
(e) None of these
4.Three years back, the average age of 5 members family is 17 years. After a child is born and now the average age of the family remains same. What is the present age of the child?
(a) 3 years
(b) 2 years
(c) 1 1/2 years
(d) 1 year
(e) None of these
5.A tap can fill a tank in 12 hours. After 4 hours it get closed and rest part of the tank was filled by a pipe in 15 hours. In how many hours the tank will be filled by pipe only?
(a) 22.5
(b) 24.5
(c) 24
(d) 18.5
(e) None of these
6.The speed of a boat in still water is 11 km/h and the speed of the stream is 3 km/h. The boat takes a total of 11 hours to cover a distance up and down of a fixed destination. What is that fixed distance?
(a) 73
(b) 56
(c) 74
(d) 75
(e) None of these
7.An urn contains 3 red , 6 blue ,2 green and 4 yellow balls .If two marbles are picked randomly then the probability that either both are red or both are green is
(a) 3/5
(b) 4/105
(c) 2/7
(d) 5/91
(e) None of these
8.A can complete a work in 10 days and B can complete the same work in 15 days. A started the work and left after 4 days. What time will B take to complete the rest work?
(a) 12 days
(b) 9 days
(c) 6( 1/4) days
(d) 4( 1/6) days
(e) None of these
9.The ratio of the income of Ram and Shyam is 7 : 17 and the ratio of the income of Shyam and Sohan is 7 : 17. If the income of Ram is Rs. 490 then what is the income of Sohan ?
(a) Rs. 1690
(b) Rs. 2890
(c) Rs. 1790
(d) Rs. 1190
(e) None of these
10.There are 50 students in a class. One boy among them, whose weight is 51 kg leaves the class and a new boy admits in the class. Due to this the average weight of the class increases by ½
kg. The weight of newly admitted student is
(a) 73 kg
(b) 76 kg
(c) 74 kg
(d) 75 kg
(e) None of these
Answers with explanation !!!!
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