# Sarita was asked to multiply a certain number by 36. By mistake

Sarita was asked to multiply a certain number by 36. By mistake, she multiplied it by 63 and got the answer, 3834 more than the correct one. What was that number?

(a) 126

(b) 142

(c) 152

(d) 163

**Answer: (b) 142 **

**Solution:-**

Let the certain number be X.

According to the question,

63 X – 36 X = 3834

27 X = 3834

X = 3834/27

X = 142

Then, the correct number was 142.

Hence, the correct answer is option (b) 142.