The sum 41
The sum of 640.00 was deposited in first bank for five years and the interest giving was 160.00 . Find the rate.
Correct answer:

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You need to know the following knowledge to solve this word math problem:
- algebra
- equation
- exponential equation
- expression of a variable from the formula
- arithmetic
- exponentiation
- basic functions
- percentages
- exponential function
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