EM-1069
Rate and average speed
E Math · Secondary 3 · Hard · Rate and average speed
Mr Tan invests \$8000 at a rate of r% per year compound interest. At the end of 2 years, the value of his investment is \$8640. Using the compound interest formula, find the value of r.
- 3.92%
- 4.00%
- 8.00%
- 9.60%
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