Question

Помогите срочно! Четырёхзначное число начинается с цифры 5. Эту цифру переставили в конец числа. Полученное число оказалось на 747 меньше исходного. Какова сумма цифр этого числа? А-12 Б-14 В-16 Г-18 Д-20. Помогите пожалуйста!(((

Answer 1

х трёхзначное число

5000+х-(10х+5)=747

9х=4248

х= 472

значит исходное число 5472 

сумма цифр 5+4+7+2= 18

Ответ 18 

Answer 2

Problem Analysis

We are given a four-digit number that starts with the digit 5. The digit 5 is then moved to the end of the number, resulting in a new number that is 747 less than the original number. We need to find the sum of the digits of this new number.

Solution

Let's assume the original four-digit number is ABC5, where A, B, and C represent the other three digits. When we move the digit 5 to the end, the new number becomes ABC5 - 747.

To find the sum of the digits of the new number, we need to calculate A + B + C + 5 - 7 - 4 - 7.

Let's calculate the sum:

A + B + C + 5 - 7 - 4 - 7 = A + B + C - 13

Since we don't have any specific information about the values of A, B, and C, we cannot determine their exact values. However, we can determine the sum of the digits of the new number.

Answer

The sum of the digits of the new number is 13.

Note: The specific values of A, B, and C cannot be determined without additional information.