Question

2. What sum would yield an interest of $36 in 3 years at 3% p.a.? 3. At what rate per cent per annum will $250 amount to $330 in 4 years? 4. At what rate per cent per annum will $400 yield an interest of $78 in 1¹/₂ years? 5. In what time will $400 amount to $512 if the simple interest is the calculated at 14% p.a.? 6. A sum amount to $2400 at 15% simple interest per annum after 4 years. Find the sum. 7. Ken borrowed $2000 from Sam at 8% per annum. After 6 year he cleared the amount by giving $2600 cash and a watch. Find the cost of the watch. 8. In how many years will $400 yield an interest of $112 at 14% simple interest? 9. In how many years will $12000 yield an interest of $13230 at 10% simple interest? 10. In how many years will $600 double itself at 10% simple interest? 11. At what rate of simple interest will $5000 amount to $6050 in 3 years, 4 months? 12. At what rate of simple interest will the sum of money double itself in 6 years? 13. Find the simple interest at the rate of 5% p.a. for 3 years on that principal which in 4 years, 8 months at the rate of 5% p.a. gives $1200 as simple interest. 14. At what rate per cent per annum will $4000 yield an interest of $410 in 2 years? 15. Simple interest on a certain sum is ¹⁶/₂₅ of the sum. Find the rate per cent and time if both are numerically equal. [Hint: (T = R), P = x, S.I. = ¹⁶/₂₅ x] 16. Simple interest on a sum of money at the end of 5 years is ⁴/₅ of the sum itself. Find the rate per cent p.a.

Answer 1

Answer:

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