A student was asked to divide a number by 3. But, instead of dividing ...
The correct answer is option 'A' (3.3).
To understand why the correct answer is 3.3, let's break down the problem step by step.
Step 1: The student was asked to divide a number by 3.
Let's assume the number is 'x'.
So, the original equation would be:
x / 3
Step 2: Instead of dividing, the student multiplied the number by 3 and got 29.7 as the answer.
So, the incorrect equation would be:
3 * x = 29.7
Step 3: Now, we need to solve the incorrect equation to find the value of 'x'.
Dividing both sides of the equation by 3, we get:
x = 29.7 / 3
Simplifying the division, we have:
x = 9.9
Therefore, according to the student's incorrect calculation, the value of 'x' is 9.9.
Step 4: Finding the correct answer.
Since the student mistakenly multiplied the number by 3 instead of dividing, we need to reverse the operation to find the correct answer.
Dividing 9.9 by 3, we get:
9.9 / 3 = 3.3
Therefore, the correct answer, had the student not made the mistake, would be 3.3.
Conclusion: The student's mistake of multiplying instead of dividing led to an incorrect answer of 9.9. However, the correct answer is 3.3, which is obtained by dividing the incorrect answer by 3.