Question

at what rate percent the simple interest wil be 2/5 of the principal at 8% per annum​

Answer 1

Step-by-step explanation:

HEY MATE .........

$let \: the \: principal \: be \: p \\ \\ simple \: interest \: = \frac{2}{5} p \\ \\ \\ rate = 8\%per \: annum \\ \\ time = \frac{interest \times 100}{principal \times rate} \\ \\ time = \frac{( \frac{2}{5} )\times 100}{p \times 8} = \frac{40}{8} = 5years$

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Answer 2

Answer:

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