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The average marks of 40 students in an E...

The average marks of 40 students in an English exam is 72. Later it is found that three marks 64, 62 and 84 were wrongly entered as 68, 65 and 73. The average after mistakes were rectified is
अंग्रेजी के परीक्षा में 40 छात्रों का औसत अंक 72 है। बाद में पता चला है कि तीन अंक 64, 62 और 84 गलती से 68, 65 और 73 लिख दिए गए थे। गलतियाँ सुधारने के बाद औसत है-

A

A)70

B

B)72

C

C)71.9

D

D)72.1

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CHAMPION PUBLICATION-2011 TIER-II PAPER(23)-EXERCISE
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  2. The average salary of all the staff in an office of a corporate house ...

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  3. The average marks of 40 students in an English exam is 72. Later it is...

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  4. Of three numbers, the second is thrice the first and the third number ...

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  5. A car covers 1/5 of the distance from A to B at the speed at 8 km/hr, ...

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  6. A jar contains 10 red marbles and 30 green ones. How many red marbles ...

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  7. If a number multiplied by 25% of itself gives a number which is 200% m...

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  8. The value on an article depreciates every year at the rate of 10% of i...

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  9. The price of onions has been increased by 50%. In order to keep the ex...

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  10. If A travels to his school from his house at the speed of 3 km/hr. the...

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  11. Nitin bought some oranges at Rs.40 a dozen and an equal number at Rs.3...

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  12. A man buys two chairs for a total cost of Rs 900. By selling one for (...

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  13. By selling 100 oranges a vendor gains the selling price of 20 oranges....

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  14. 60% of the cost price of an article is equal to 50% of its selling pri...

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  15. A person bought two horses at the rate of Rs 40000 each. If he gains 1...

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  16. A fruit-seller buys x guava for Rs y and sells y guavas for Rs x if x ...

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  17. If the simple interest on Rs.x at a rate of a% for m years is same as ...

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  18. A took two loans altogether for Rs.1200 from B and C. B claimed 14% si...

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  19. If a regular polygon has each of its angles equal to 3/5 times of two ...

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  20. The area of square is 200m^2. A new square is formed in such a way tha...

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