Question

Instead of dividing a number by 21, a student did the division by 12 and got the answer as 35. What is the correct answer?

• A. 26
• B. 15
• C. 20
• D. 25

Answer 1

Answer:

C. 20

Let the number be x

⇒ $\frac{x}{12}=35$

⇒ $x=35\times{12}=420$

If we divide 420 by 21, then

⇒ $\frac{420}{21}$

⇒ 20

∴ Correct answer is 20.