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If (3)/(5) of a number 'R' is equal to 3...

If `(3)/(5)` of a number 'R' is equal to 30, then find `40%` of R.

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The correct Answer is:
20
`(3)/(5)xxR=30`
`R=30xx(5)/(3)`
`R=50`
`40%" of "R=(40)/(100)xx50`
`=20`
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PEARSON IIT JEE FOUNDATION-PERCENTAGES AND THEIR APPLICATIONS -Short Answer Type Questions
  1. Express (i) 0.05 (ii) 5.0 into percentages.

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  2. If 10% of a number x is 25, then find the value of 20% of x.

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  3. If (3)/(5) of a number 'R' is equal to 30, then find 40% of R.

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  4. If 20% of x+40% of (x)/(2)+20% of 3x=100, then find the value of x.

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  5. The area of a square sheet is 250 sq. cm. If one-fourth of the sheet i...

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  6. In a tray. There are 240 eggs. Raju sold 24 eggs from it and he used 1...

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  7. Saritha added 0.5 liter of water to 2 litres of pure milk. Find the pe...

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  8. CP=Rs. 900 and Loss = Rs. 220. Find the selling price and the percenta...

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  9. CP = Rs. 800, MP = Rs. 1000 and SP = Rs. 900. Find the percentage of ...

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  10. The percentage of profit made on selling an article is 12%. If the cos...

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  11. The loss incurred on selling an article for Rs. 720 is Rs. 360. Find t...

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  12. Mr Surya and Mr Karthi got 15% and 25% profits respectively in their b...

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  13. A fruit seller purchased 20 kg of grapes for Rs. 400. If he sells the ...

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  14. Mr Akhil sold his bike for Rs. 42000. Its cost price was Rs. 60000. Fi...

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  15. Mr Tarak purchased two horses for Rs. 7,50,000. He sold one horse for ...

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  16. P= Rs. 6000, A= Rs. 6660 and the time period is 1 year. Find the inter...

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  17. A= Rs. 7920, I= Rs. 720 and, T = 2 years. Find the principal and rate ...

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  18. P=12000. Rate 12% p.a., T=12 months. Find the interest and the amount.

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  19. Rate =15% p.a., P = Rs. 70000, A = Rs. 1,01,500. Find the time period.

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  20. In how many years, a certain sum becomes tripe itself at 12% p.a.?

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