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If the arithmetic mean of seventy-fiv...

If the arithmetic mean of seventy-five numbers is calculated, it is 35. If each number is increased by 5, then mean of new numbers is: (a) 30 (b) 40 (c) 70 (d) 90

A

30

B

40

C

70

D

80

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The correct Answer is:
B
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S CHAND IIT JEE FOUNDATION-AVERAGE -QUESTION BANK -16
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  10. Out of three numbers , the first is twice the second and is half of t...

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  12. If the arithmetic mean of seventy-five numbers is calculated, it is...

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  13. The average of 6 numbers is 30 . If the average of the first four i...

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  14. The average of 11 numbers is 32 .If the average of the first six nu...

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