ABCDE is that the sum of five natural numbers AB is equal to three fifths of the sum of the other three numbers.

The sum of AB is equal to three fifths of the sum of other three numbers, that is, three eighths of the sum of five numbers, and the sum of DE is equal to five eighths of the sum of three numbers, that is, five thirteenth of the sum of five numbers. That is to say, the number ABDE four * * * accounts for 79/ 104 of the total, and the number c accounts for 1-79/65438 of the total.