$5999.99 + 1999 \div 39.99 \times 50.01 = ?$

$9999 + 8888 + 777 + ? = 19700$

The sum of three numbers is $68$. If the ratio between the first and second is $2:3$ and that between the second and third is $5:3$,then the second number is

In a division sum,the divisor $d$ is $10$ times the quotient $q$ and $5$ times the remainder $r$. If $r = 46$,the dividend will be:

Two numbers are such that the ratio between them is $3:5;$ but if each is increased by $10,$ the ratio between them becomes $5:7.$ The numbers are

The sum of five consecutive even numbers of set-$A$ is $220$. What is the sum of a different set of five consecutive numbers whose second lowest number is $37$ less than double the lowest number of set-$A$?