Aditya has some amount,out of which $25 \%$ is stolen,$10 \%$ he gave to his friend,$50 \%$ of the remainder is spent on a party,and the rest $Rs. 26$ he gave to his mother. What was his initial amount?

Nutan got $456$ marks in an exam. Aditya got $54 \%$ marks in the same exam,which is $24$ less than Nutan. The minimum passing marks in the exam is $35 \%$. How many marks did Nutan get more than the passing marks?

Sixty-five percent of a number is $21$ less than four-fifth of that number. What is the number?

If $35 \%$ of $A$'s income is equal to $25 \%$ of $B$'s income,then the ratio of $A$'s income to $B$'s income is

In an examination,$A$ got $25\%$ marks more than $B$,$B$ got $10\%$ less than $C$,and $C$ got $25\%$ more than $D$. If $D$ got $320$ marks out of $500$,the marks obtained by $A$ were:

An empty fuel tank of a car was filled with an ordinary type of petrol. When the tank was one-third empty,it was filled with high-speed petrol. Again,when the tank was one-third empty,it was filled with an ordinary type of petrol. Again,when the tank was one-third empty,it was filled with high-speed petrol. At this time,what was the percentage of high-speed petrol in the tank?