Question

СРОЧНО ПОЖАЛУЙСТА НАДО!!!!!!!! Үстелде 18 адам отыр . Олардың орташа жасы 15. Бір адам тұрып кетті . Қалған адамдардың орта жасы 14 . Тұрып кеткен адамның жасы қаншада ?

Answer 1

Ответ:

о моему 15 жася так думаю но это логический

Answer 2

Ответ:

менин оюмча ответ 15

Пошаговое объяснение:

18 адам отыр. Олардын орташа жасы 15 . Бир адам турып кетти. калган адамдардын орта жасы 14. турып кеткен адамнын жасы 15 . ол турып кетген сон калгандарын орта жасы 14. ал эми ол барда 15

Answer 3

According to Google Translate, the Kazakh sentence you entered means:

Answer in detail. URGENTLY PLEASE NEED !!!!!!!! There are 18 people sitting on the couch. Their average age is 15. One person got up and left. The average age of the remaining people is 14. How old is the person who left?

This is a math problem that can be solved by using the formula for the average of a group of numbers. The formula is:

average = (sum of all numbers) / (number of numbers)

We can use this formula to find the sum of the ages of the 18 people who were sitting on the couch. We know that their average age was 15, so we can write:

(sum of all ages) / 18 = 15

Multiplying both sides by 18, we get:

sum of all ages = 15 x 18 = 270

Now, we can use this sum to find the age of the person who left. We know that the average age of the remaining 17 people was 14, so we can write:

(sum of remaining ages) / 17 = 14

Multiplying both sides by 17, we get:

sum of remaining ages = 14 x 17 = 238

To find the age of the person who left, we can subtract the sum of the remaining ages from the sum of all ages. We get:

age of the person who left = sum of all ages - sum of remaining ages = 270 - 238 = 32

Therefore, the person who left was 32 years old.