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A student calculated the average of 10, ...

A student calculated the average of 10, three digit number. But due to mistake he reversed the digits of a number and thus his average increased by 19.8. Find the difference between the unit digit and hundreds digit of that of that number

A

8

B

4

C

2

D

can't be determined

Text Solution

Verified by Experts

The correct Answer is:
C
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ARIHANT SSC-AVERAGES-Exercise (Level 2)
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  4. The average weight of political party is decreased by 1 when some new ...

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  5. Ravi went to Kanpur from Lucknow by his four wheeler. During the journ...

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  6. There are 6 consecutive odd numbers in increasing order. The differenc...

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  7. The average age of board of directors of a company having 10 directors...

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  8. In an office the average weight of 24 employees is 60 kg. If n employ...

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  9. The average age of 100 nurses in a nursing home in 1982 was 50 years i...

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  10. Bhartiya Idol is a talent search programme launched and run by TV Tara...

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  11. A student has to secure 36% marks to pass. He gets 150 marks and fails...

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  12. Bhartiya Idol is a talent search programme launched and run by TV Tara...

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  13. If 75% of students in a school are boys and the number of girls is 310...

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  14. It is known that 6% of the mangoes are rotten. If the number of rotten...

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  15. In an NGO the daily average wages of 20 illiterate employees is decrea...

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  16. Mr. tyagi while going from merrut to saharanpur covered half the dista...

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  17. There are four types of candidates in our coaching preparing for the C...

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  18. A student calculated the average of 10, three digit number. But due to...

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  19. Once my peon went to the office of Skyline courier with 4 different en...

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  20. The average expenditure of the hotel when there are 10 guests is ₹60 p...

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