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## #1 2017-12-16 14:12:30

**shakeel123****Moderator**- Registered: 2017-09-21
- Posts: 50,796

### The average age of an adult class is 40 years. Twelve new student...

# General Basic Math Exams Quizzes MCQs Quizzes Word Problems Math Quiz

**Question:**

The average age of an adult class is 40 years. Twelve new students with an average age of 32 years join the class, thereby decreasing the average of the class by 4 years. The original strength of the class was:

**Option A):**

10**Option B):**

12**Option C):**

11**Option D):**

15

**Correct Answer is Option B):**

12

**Explanation:**

Solution:

Let, original strength = x

40x + 12 x 32/ x + 12 = 36 or x = 12

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## 2017-12-16 14:12:30

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### Re: The average age of an adult class is 40 years. Twelve new student...

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