Question
A sum of money amounts to Rs 1024 in 4 years and Rs 1458
in 7 years at a compound rate of interest. What is the rate of interest per annum?Solution
For 3 years, taking cube rootsFor 3 years, taking cube roots = ∛512 = 8 = ∛729 = 9 Rate of interest = (difference of amount)/(first amount)× 100 = (9 - 8)/8 × 100 = 12.5% per annum
More Compound Interest Questions
5466.97 - 3245.01 + 1122.99 = ? + 2309.99
(16.16 ×  34.98) + 14.15% of 549.99 = ? + 124.34
- What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exactvalue.)
15.232 + 19.98% of 539.99 = ? × 8.99
(31.9)3 + (34.021)² - (16.11)3 - (42.98)² = ?
What approximate value will come in place of the question mark (?) in the following question? (Note: You are not expected to calculate the exact value.)...
`sqrt(7.987 X 24.790 +199.991)`
19.99% of 79.98 = ?2– 159.99% of 12.5
(18.21)² - (12.9)² = 20% of 649.9 - ? + 400.033
2875.45 + ? – 2762.19 = 2145.72 – 1956.63
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