If the price of a book is first decreased by $25 \%$ and then increased by $20 \%,$ then the net change in the price will be

$A$ batsman scored $110$ runs which included $3$ boundaries and $8$ sixes. What per cent of his total score did he make by running between the wickets?

Two numbers are respectively $12 \frac{1}{2} \%$ and $25 \%$ more than a third number. The first number as a percentage of the second number is

$65 \%$ of $? = 20 \%$ of $422.50$

Sashi has $Rs. 90000$ with him. He purchases a mobile,an iPad,and a laptop for $Rs. 15000$,$Rs. 13000$,and $Rs. 35000$ respectively and puts the remaining money in his bank account which pays $15 \%$ per annum compound interest. After $2$ years,he sells off the three items at $80 \%$ of their original price and also withdraws his entire money from the bank by closing the account. What is the total percentage change in his assets (in $\%$)?

Pooja invests $13 \%$ of her monthly salary,i.e.,$Rs. 8554$ in Mediclaim Policies. Later she invests $23 \%$ of her monthly salary on Child Education Policies,she also invests another $8 \%$ of her monthly salary on Mutual Funds. What is the total annual amount invested by Pooja?