$A$ 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?

What per cent of a day is $3$ hours?

If $40 \%$ of a number is equal to two-third of another number,what is the ratio of the first number to the second number?

In a college election between two candidates,one candidate got $55 \%$ of the total valid votes. $15 \%$ of the votes were invalid. If the total votes were $15,200$,what is the number of valid votes the other candidate got?

The population of a town is $9000$. If the number of females increases by $5 \%$ and the males by $7.5 \%$,what will be the total population after the increase? The number of females currently is $3000$.

Sonu invested $10 \%$ more than Mona. Mona invested $10 \%$ less than Raghu. If the total sum of their investments is ₹$5,780$,how much amount did Raghu invest?