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The value of a machine depreciates every...

The value of a machine depreciates every year by 20%. If the present value of the machine be 160000, what was its value last year?

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RS AGGARWAL-PERCENTAGE-EXERCISE 9A
  1. convert the ratio 4:5 to percentage .

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  2. Express 125 % as a ratio .

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  3. Which is largest in 6(2)/(3) % (3) /(20) and 0.14 ?

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  4. (i) what per cent of 150 is 96 ? (ii ) what per cent of ...

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  5. Find 4(1)/(2) % of Rs. 3600 .

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  6. IF 16 % of a number is 72 . Find the number .

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  7. A man saves 18 % of his monthly income . If he saves Rs. 3780 ...

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  8. A football team wins 7 games , which is 35 % of the total gam...

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  9. Amit was given and increment of 20% on his salary . If his new...

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  10. Sonal attended her school on 204 days in a full year. If her attendanc...

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  11. A's income is 20% less than that of B. By what per cent is B's income ...

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  12. The price of petrol goes up by 10%. By how much per cent must a motori...

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  13. The population of a town increases by 8% annually. If the present popu...

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  14. The value of a machine depreciates every year by 20%. If the present v...

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  15. An alloy contains 40% copper, 32% nickel and rest zinc. Find the mass ...

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  16. Balanced diet should contain 12% of proteins, 25% of fats and 63% of c...

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  17. Gunpowder contains 75% nitre and 10% sulphur. Find the amount of gunpo...

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  18. Divide Rs 7000 among A, B and C such that A gets 50% of what B gets a...

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  19. Find the percentage of pure gold in 22-carat gold, if 24-carat gold is...

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  20. The salary of an officer is increased by 25%. By what per cent should ...

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