New brainteaser that many adults are getting wrong has been sweeping the web – can you get it right?

Do you know the correct answer to: 9 – 3 ÷ 1/3 + 1 = ?

It may seem easy enough to answer – but the question is an example of slipping maths standards across generations, it has been claimed.

**Can you figure it out?**

a. 1

b. 3

c. 9

4. 12

The key to answering the question is all to do with a basic maths rule you were most likely taught at school but may have since forgotten.