Question

if the simple interest on Rs 300 increase by Rs15,when the rate% increase by 4% per annum. Find the time ?

Answer 1

simple interest=ptr/100
300=15(x)(4)
300=60x
x=300/60
x=5min

Answer 2

$\fontsize{15}{10}{\textup{\textbf{The time is 1.25 years.}}}$

Step-by-step explanation:

We know that the simple interest on a principal of Rs. P at the rate of r% in a time of n years is given by

$S.I.=\dfrac{Prn}{100}.$

So, according to the given information, we have

$\dfrac{300\times (r+4)\times t}{100}-\dfrac{300\times r\times t}{100}=15\\\\\\\Rightarrow \dfrac{300}{100}\times(rt+4t-rt)=15\\\\\Rightarrow 12t=15\\\\\Rightarrow t=\dfrac{15}{12}\\\\\Rightarrow t=1.25.$

Thus, the required time is 1.25 years.

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Link : https://brainly.in/question/1567264.