Question : The number of students in a class has increased by 20% and the number has now become 66. Initially, the number was:
Option 1: 45
Option 2: 50
Option 3: 55
Option 4: 60
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Correct Answer: 55
Solution :
Given: The number of students in a class has increased by 20% and the number has now become 66.
Let the initial number of students be $x$.
According to the question,
⇒ $\frac{120x}{100} = 66$
⇒ $x = 55$
Hence, the correct answer is 55.
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