Question

В одному училищі 480 випускників. Фахом слюсаря оволоділо 3/8 з них, фахом тракториста - 2/3 решти випускників. Скільки випускників оволоділо фахом тракториста?

Answer 1

1)480:8•3 = 180( вип)- оволоділо фахоми слюсаря
2)(480-180):3•2 = 200 ( вип)
Відповідь:фахом тракториста оволоділо 200 випускників.

Answer 2

480 : 8 * 3 = 180 (вып.) - овладели специальностью слесаря.
480 - 180 = 300 (вып.) - остальные специальности.
300 : 3 * 2 = 200 (вып.) - овладели специальностью тракториста.
Ответ: специальностью тракториста овладели 200 выпускников.

Answer 3

Problem Analysis

We are given that there are 480 graduates in a school. Among them, 3/8 have mastered the profession of a locksmith, and 2/3 of the remaining graduates have mastered the profession of a tractor driver. We need to determine how many graduates have mastered the profession of a tractor driver.

Solution

Let's solve this problem step by step.

Step 1: Find the number of graduates who have mastered the profession of a locksmith. We are given that 3/8 of the graduates have mastered the profession of a locksmith. To find the number of graduates who have mastered this profession, we can multiply the total number of graduates by the fraction 3/8.

Number of graduates who have mastered the profession of a locksmith = (3/8) * 480

Step 2: Find the number of graduates who have not mastered the profession of a locksmith. To find the number of graduates who have not mastered the profession of a locksmith, we can subtract the number of graduates who have mastered this profession from the total number of graduates.

Number of graduates who have not mastered the profession of a locksmith = Total number of graduates - Number of graduates who have mastered the profession of a locksmith

Step 3: Find the number of graduates who have mastered the profession of a tractor driver. We are given that 2/3 of the remaining graduates (who have not mastered the profession of a locksmith) have mastered the profession of a tractor driver. To find the number of graduates who have mastered this profession, we can multiply the number of graduates who have not mastered the profession of a locksmith by the fraction 2/3.

Number of graduates who have mastered the profession of a tractor driver = (2/3) * Number of graduates who have not mastered the profession of a locksmith

Let's calculate the solution.

Step 1: Calculate the number of graduates who have mastered the profession of a locksmith. Number of graduates who have mastered the profession of a locksmith = (3/8) * 480 = 180

Step 2: Calculate the number of graduates who have not mastered the profession of a locksmith. Number of graduates who have not mastered the profession of a locksmith = 480 - 180 = 300

Step 3: Calculate the number of graduates who have mastered the profession of a tractor driver. Number of graduates who have mastered the profession of a tractor driver = (2/3) * 300 = 200

Answer

Therefore, 200 graduates have mastered the profession of a tractor driver.