Which of the statement given below are sufficient to answer the following question.

What is the rate of interest per annum on an investment of $Rs. 800 ?$

($I$) The income from $S.I.$ at the end of $3$ years at the same rate of interest is $19$

($II$) $C.I.$ is $15.76$ more than $S.I.$ on same sum $\&$ same rate in $2$ years

If a sum of money placed at compound interest, compounded annually, doubles itself in $5$ years, then the same amount of money will be $8$ times of itself in (In $years$)

The population of a state increases by $10 \%$ every year. If its population in the year $2003$ was $15$ lakhs, what was its population in the year $2005$ (in $lakhs$)?

An amount of money at compound interest grows up to ₹ $3,840$ in $4$ years and up to ₹ $3,936$ in $5$ years. Find the rate of interest (In $\%$) 

Aditya invested certain amount in two different schemes $A$ and $B$. Scheme $A$ offer $S.I$ @ $12$ $p.c.p.a.$ and scheme $B$ offer $C.I.$ @ $10$ $p.c.p.a.$ Interest accured on the amount invested in scheme $A$ in $2$  years was $Rs. 3600$ and the total amount invested was $Rs. 35000$. What was the interest accured on the amount (In $Rs.$) invested in scheme $B$?

The difference between the compound interest and simple interest on a certain sum at $5 \%$ for $2$ years is ₹ $1.50$. The sum is (In ₹)