If a number $x$ is $10 \%$ less than another number $y$ and $y$ is $10 \%$ more than $125,$ then $x$ is equal to

In a certain quantity of ghee, $60 \%$ is pure ghee and $40 \%$ is vanaspati. If $10 \text{ kg}$ of pure ghee is added, the concentration of vanaspati ghee becomes $20 \%$. What was the original quantity (in $\text{ kg}$)?

What percent of $12$ is $84$?

$\frac{3}{4}$ of $\frac{2}{3}$ of $\frac{1}{5}$ of a number is $249.6$. What is $50\%$ of that number?

If $90 \%$ of $A = 30 \%$ of $B$ and $B = x \%$ of $A$,then the value of $x$ is

In an examination,there are three papers and a candidate has to get $35 \%$ of the total to pass. In one paper,he gets $62$ out of $150$ and in the second $35$ out of $150$. How much must he get,out of $180$,in the third paper to just qualify for a pass?