Two numbers are $90 \%$ and $75 \%$ lesser than a third number. By what percentage should the first number be increased so that it becomes equal to the second number?

$A$ sum of Rs. $2236$ is divided among $A$,$B$,and $C$ such that $A$ receives $25\%$ more than $C$ and $C$ receives $25\%$ less than $B$. What is $A$'s share in the amount?

If all sides of a hexagon are increased by $7 \%$,find the percentage increase in its area. (in $\%$)

$A$ man donates $30\%$ of his wealth to charity. He gives $30\%$ and $25\%$ of the remaining wealth to his wife and son respectively. The rest he divides equally between his three daughters. One of his daughters gets $Rs$ $42$ lakh as her share. What was the man's total wealth (in $Rs$ lakhs)?

Two numbers are respectively $20 \%$ and $10 \%$ more than a third number. How much per cent is the first number more than the second?

$40 \%$ of $1640 + ? = 35 \%$ of $980 + 150 \%$ of $850$