$42 \%$ of a number is $357$. What is $63 \%$ of that number?

If $1$ is added to the denominator of a fraction,the fraction becomes $\frac{1}{2}$. If $1$ is added to the numerator,the fraction becomes $1$. The fraction is

The price of commodity $X$ increases by $40 \text{ paise}$ every year,while the price of commodity $Y$ increases by $15 \text{ paise}$ every year. If in $2001$,the price of commodity $X$ was $Rs. 4.20$ and that of $Y$ was $Rs. 6.30$,in which year will commodity $X$ cost $40 \text{ paise}$ more than commodity $Y$?

If the number $583x437$ is completely divisible by $9$,then the smallest whole number in the place of the blank digit $x$ will be

When a certain number is multiplied by $7$,the product consists entirely of fives; find the least value of such a number.

The sum of the digits of a two-digit number is $8$. If the digits are reversed,the number is increased by $54$. Find the number.