MCQ
Mark $(\checkmark)$ against the correct answer in the following:
In what time will Rs. $6000$ amount to Rs. $6360$ at $8\%$ interest per annum simple interest?
  • $9\text{ months}$
  • B
    $\text{8 months}$
  • C
    $1\frac14\text{ years}$
  • D
    $1\frac12\text{ years}$

Answer

Correct option: A.
$9\text{ months}$
$P = Rs. 6000$
$A = Rs. 6360$
$S.I. = A - P = 6300 - 6000$
$= Rs. 360$
$$$\text{T}=\frac{\text{S.I.}\times100}{\text{P}\times\text{T}}=\frac{360\times100}{6000\times8}$
$=\frac68\text{ years}$
$=\frac67\times12\text{ months}$
$=\frac{72}{8}$
$=9\text{ months}$

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