$1$ quintal $25$ $kg$ is what percent of $1$ metric tonne?

Pradeep invested $20\%$ more than Mohit. Mohit invested $10\%$ less than Raghu. If the total sum of their investment is $₹ 17,880$,how much amount did Raghu invest?

$A$ candidate appearing for an examination has to secure $35 \%$ marks to pass. But he secured only $40$ marks and failed by $30$ marks. What would be the maximum marks of the test?

In an examination,$34 \%$ of students failed in Mathematics and $42 \%$ failed in English. If $20 \%$ of the students failed in both the subjects,then the percentage of students who passed in both the subjects was:

If $8 \%$ of $x = 4 \%$ of $y,$ then $20 \%$ of $x$ is:

$32.05 \% \text{ of } 259.99 = ?$