1. Average weight of 3 men A, B and C is 84 kg. Another man D joins the group and the average now becomes 80kg. If another man E whose weight is 3 kg more than that of D replaces A then the average weight of B, C, D and E becomes 79 kg. The weight of A in kg is:
2. The cost price of two dozen bananas is Rs. 32 After selling 18 bananas at the rate Rs. 12 per dozen, the shopkeeper reduced the rate to Rs. 4 per dozen. The per cent loss is
3. A man invested a sum of money at compound interest. It amounted to Rs. 2420 in 2 years and to Rs. 2662 in 3 years. Find the sum.
4. 94 is divided into two parts in such a way that the fifth part of the first and the eighth part of the second are in the ratio 3 : 4. The first part is :
5. Two pipes A and B can fill a tank in 36 minutes and 45 minutes respectively. Another pipe C can empty the tank in 30 minutes. First A and B are opened. After 7 minutes, C is also opened. The total time taken in filling the tank is:
6. A man invests half of his capital at the rate of 10% p.a., one-third at 9% p.a. and the rest at 12% p.a. The average rate of interest p.a., which he gets is:
7. A man can swim 3 km/hr in still water. If the velocity of the stream is 2 kmh/r, the time taken by him to swim to a place 10 km upstream and back is :
8. If the diagonals of two squares are in the ratio of 2 : 5. Their area will be in the ratio of
9. In covering a distance of 30 km, Abhay takes 2 hours more than Sameer. If Abhay doubles his speed, then he would take I hour less than Sameer. Abhay’s speed (in km/hr) is
10. A, B and C working alone can complete a piece of work in 10, 12 and 15 days respectively. They all started working together on the work. A left the work 5 days before the work was completed and B left 2days after A had left. Number of days required to complete the whole work was:
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