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If interest on Rs x for 2 years at R% pe...

If interest on Rs `x` for 2 years at R% per annum is Rs 80, then interest on Rs `2x` for one year at R% per annum is
(a) Rs 160
(b) Rs 40
(c) Rs 80
(d) Rs 120

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RD SHARMA ENGLISH-SIMPLE INTEREST-All Questions
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  8. The simple interest for Rs 1500 at 8% per annum for 3 years is (a) ...

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  9. The difference between the interest obtained for Rs 1000 at 12% per ...

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  10. Which of the following yields maximum interest for 2 years? (a) Rs 1...

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  11. If a sum of Rs 3000 is lent out at 3% per annum for 20 years under s...

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  12. If a sum of Rs 2000 is lent out at 2% per annum for 10 years under s...

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  13. If interest on Rs x for 2 years at R% per annum is Rs 80, then inter...

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  14. At simple interest a sum becomes (49)/(40) of itself in 2 1/2 years....

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  15. At what rate percent per annum simple interest will a sum double its...

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  16. In what time will a sum of Rs 8000 amount to Rs 8360 at 6% per annum...

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  17. a,b and c are the three sums of money such that b is the simple i...

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  19. The simple interest on a certain sum is (16)/(25) of the sum. If the...

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  20. At which rate percent per annum simple interest will a sum triple it...

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