Two numbers are 20% and 50% of the third number respectively, then what is the percentage of the first number to the second number?

Two numbers are 10% and 20% less than the third number respectively. First number is what percent of the second number?

Given are there numbers. If the second and the third numbers respectively are 20% and 50% more than the third number, then what percentage is the first of second ?

There are 3 numbers. The first and second numbes are 20% and 40% more than the third number. What percentage is the first number of the sum of the second and the third numbers ?