Dave borrowed a total sum of Rs 3000 from two different parties at 5% and 8% simple interest respectively The total interest paid by him after 3 years is 570 The ratio of money borrowed by him at 5% to that borrowed at 8% is

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Solution

The correct option is B 20:11
Let the money borrowed by Dave be x and 1550-x
$x \times \frac{5}{100} \times 3 + (2750 - x) \times \frac{8}{100} \times 3 = 570 15 x - 24 x = 57000 - 66000 9 x = 9000 x = 1000 1000 : 550 = 20 : 11$

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Dave borrowed a total sum of Rs 3000 from two different parties at 5% and 8% simple interest respectively The total interest paid by him after 3 years is 570 The ratio of money borrowed by him at 5% to that borrowed at 8% is

The correct option is B 20:11Let the money borrowed by Dave be x and 1550-x x×5100×3+(2750−x)×8100×3=57015x−24x=57000−660009x=9000x=10001000:550=20:11

The correct option is B 20:11
Let the money borrowed by Dave be x and 1550-x
$x \times \frac{5}{100} \times 3 + (2750 - x) \times \frac{8}{100} \times 3 = 570 15 x - 24 x = 57000 - 66000 9 x = 9000 x = 1000 1000 : 550 = 20 : 11$