$40 \%$ are the passing marks. $A$ student gets $250$ marks yet fails by $38$ marks. What is the maximum marks?

$A$ 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?

$A$ housewife saved $₹ 2.50$ in buying an item on sale. If she spent $₹ 25$ for the item,approximately what percentage did she save in the transaction?

The cost price of goods of a bankrupt is $Rs. 25500$. If the goods had been realised at their full value,his creditors would have received $85$ paise in the rupee. But $2/5$ of the goods were sold at $17\%$ below their cost price and the remainder at $22\%$ below their cost price. How many paise in a rupee was received by the creditors?

Three candidates contested an election and received $1136$,$7636$,and $11628$ votes respectively. What percentage of the total votes did the winning candidate get?

One side of a square is increased by $30 \%$. To maintain the same area,the other side will have to be decreased by: