Aptitude Question Papers

291. The average height of 30 girls out of a class of 40 is 160 cms, and that of the remaining girls is 156 cms. The average height of the whole class is :

292. A runs 1 times as fast as B. If A gives B a start of 60 metres, how far must the winning post be in order that A and B reach it at the same time?

293. Two trains A and B star from station X and Y toward Y and X respectively. After passing each other, they take 4 hours 48 minutes and 3 hour 20 minutes to reach Y and X respectively. If train A is moving at 45 km/hr. then the speed of train B is:

294. Rs. 2780 are invested partly in 4% stock at 75 and 5% stock at 80 to have equal amount of incomes. The investment in 5% stock is:

295. A shopkeeper mixes two varieties of tea, one costing Rs. 35 per kg and another at Rs. 45 per kg in the ratio 3:2 If he sells the mixed variety at Rs. 41.60 per kg, his gain or loss per cent is:

296. In a 300 metres race A beats B by 15 metres or 5 seconds. A�s time over the course is

297. A can run 100 metres in 27 seconds and B in 30 seconds. A will beat B by

298. A sum of Rs. 41 was divided among 50 boys and girls. Each boy gets 90 paise and a girl 65 paise. The number of boys is ?

299. A metal sheet 27 cm long, 8 cm broad and 1 cm thick is melted into a cube. The difference between the surface areas of two solids, is :

300. A sum is invested at compound interest payable annually. The interest in two successive years was Rs. 500 and Rs. 540. The sum is: