SSC Apt Exam 04030

1. The Average of 7 data is 34 and the Average of first 3 data is 28 and the Average of next two data is 47. Find the average of last 2 data.

2.The Avarage of 8 number is 20. The avg. of first two number is 15.5 and the avg. of next 3 number is 21 1\3 . If the 6th no. is 4 less than the 7th and 7 less then the 8th number Find the 8th number ?

3. A milkman mixes 10% water in pure milk but he is not content with it so he again mixes 10% more water in the previous mixture. What is the profit percentage of milkman if he sells it at cost price :

4. A man bought 5 cows and 13 buffalo. for Rs. 51,000 He sold cows at 15% profit and buffalos at 10% loss. In this way he got a profit of Rs. 1150. Find the cost price of 2 cows and 3 buffaloss.

5. In a co-educational school the number of girls is 15 more than that of boys. If the number of girls increase by 10% and the number of boys increase by 16% then the difference between number of girls and boys remains 9. Find the total number of students in the school.

6 . The price of a weekly magzine be Rs. 90. There is a 30% discount on becoming a customer of 51 magzines while a 25% discount to the customer of 26 magzines. Find the difference of the price of a magzine for a customer of 51 magzines and a customer of 26 magzines.

7.A vessel contains some milk. 6 litre of the milk was taken out of the vessel and replaced with 6 litre of water and again 6 litre of mixture was taken out and was replaced with water. Now the ratio of milk to water becomes 100 : 69. Find the initial quantity of milk in the vessel.

8 .A vessel cantains 500 litre milk. 40 litre milk was taken out and was replaced with 40 litre water. Next time 20 litre of the mixture was taken out and was replaced with 20 litre water. And in the last 10 litre mixture was taken out and replaced with 10 litre water. Find the quantity of milk remaining in the vessel.

9. A, B and C can do a piece of work in 36, 54 and 72 days respectively. They started the work but A left 8 days before the completion of the work while B left 12 days before the completion. The number of days for which C worked is:

10. A can do a piece of work in 8 days, 'B' destory it in 3 days. A does work for 6 days. During the last 2 days of which B has been destroying. How many days must A work alone to complete the work?

11. A man can see 400 m in a fog. When he was travelling at a speed of 4 km/hr, he saw a train was coming behind him which was passing by the side of man and disappeared after 3 minutes. If the length of train is 200 m then find the speed of the train?

12. A hare was 180 m ahead from a hound after seeing the hound, hare started running at 9 km/h. After 1 min the hound started chasing the hare at a speed of 12 km/h. Find the distance travelled by the hound if the hound will catch the hare from the place where the hound standing?

13. If ` 12000 is divided into two parts such that simple interest on first part at 12% per annum for 3 years is equal to the simple interest on second part at 16% per annum for 4 1/2 years. Find the greater part.

14 . Find the compound interest on ` 1000 at the rate of 20% per annum for 18 months when interest is compounded halfyearly.

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19 . A can go round a circular path 8 times in 40 minutes. If the diameter of the circle is increased to 10 times the original diameter, the time required by A to go round the new path once travelling at the same speed as before is :

20 . If the radius of a sphere is increased by 2 cm, its surface area increased by 352 cm2 . The radius of sphere before change is :

21. Find the unit digit of 584 × 389 × 476 × 786

22. Find the unit digit of (5627)153 × (671)230

23 . Find the unit digit of (3625)333 × (4268)645

24 . Find the unit digit of 641 × 673 × 677 × 679 × 681

25. Find the unit digit (3694)1793 × (615)317 × (841)941