class 8th maths for final exams

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PH: 9835859669 MATHEMATICS Class 8^th

JSUNIL TUTORIAL

PUNJABI COLONY GALI 01

FINAL Examination 2011

1. 6 oxen or 8cows can graze a field in 28days. How long would 9 oxen and 2 cows take to graze the same field?

2. 70 patients in a hospital consume 1350litresof milk in 30days. At the same rate, how many patients will consume 1710litresin 28days?

3. Five machines, when operated for 9hourseach day can harvest a farm in 16days. How many days would 8machines take to harvest the same farm, if each machine is now operated for 10hoursa day?

4. If 20 men can build a 112 m long wall in 6days, what will be the length of a similar wall that can be built by a 25men in 3days?

5. Two parallel sides of a trapezium are of lengths 3.2cm and 4cm respectively, and the distance between them is 6 cm. Find the area of the trapezium.

6. Find the area of the trapezium whose parallel sides are 12cmand10cmand the distance between them is 5cm.

7. The dimensions of a rectangular water tank are 12mby15mby20m. How many litres of water does it hold when filled to the brim?

8. The length, breadth and height of a cuboid are in the ratio 6:5:3. If its total surface area is 504cm2, find its dimensions.

9. Three cubes of metal with edges 5cm, 4cm and 3cm respectively are melted to form a single cube. Find the lateral surface area of the new cube formed.

10. If a die is thrown once, what is the probability of getting a prime number?

11. A coin is tossed 200times and tail is obtained 128 times. Now, if a coin is tossed at random, what is the probability of getting a tail?

12. In 100 throws of a dice, 5 is obtained 42 times. In a random throw, what is the probability of getting a 5?

13. There are 216workers in a factory and in which 75are laborers. What would be the central angle of the sector representing laborers in the pie chart ?

14. If 45%of the people residing in a locality are Hindus, then what is the central angle of the sector representing the Hindus in the pie chart?

15. If the length of each edge of a cube is doubled, how many times does its surface area become?

16. In how many years will Rs1600 amount to Rs1852.20 at 5% annum when compounded annually?

17. At what rate per cent per annum will Rs4000 amount to Rs 4410in 2years when compounded annually?

18. The difference between the compound interest and the simple interest on a certain sum for 2 years at 5%per annum is Rs40. Find the sum.

19. Neha borrowed Rs 24000from a bank to buy a scooter. If the rate of interest be 10% per annum compounded annually, what payment will she have to make after 2 years3 months?

20. A box with a lid is made of wood which is 3cmthick. Its external length, breadth and height are 56cm, 39cmand30cm respectively. Find the capacity of the box. Also, find the volume of wood used to make the box

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