$149.9 \%$ of $149.9 + 149.9 = ?$

If $40 \%$ of a number is $360,$ what will be $15 \%$ of that number?

Which number should replace both the $*$s in $\left(\frac{*}{21}\right) \times \left(\frac{*}{189}\right) = 1$?

$A$ fraction becomes $4$ when $1$ is added to both the numerator and denominator; and it becomes $7$ when $1$ is subtracted from both the numerator and denominator. The numerator of the given fraction is

$A$ number when divided by the sum of $555$ and $445$ gives two times their difference as quotient and $30$ as the remainder. The number is

The product of two numbers is $120$. The sum of their squares is $289$. The sum of the two numbers is