Did you get it right?
This blackboard puzzle asks you to solve 30 – 20 / 5 + 1. The division comes before subtraction.
The Answer
The correct answer is: The answer is 27..
Here is why
- Do the division first: 20 / 5 = 4.
- Then work left to right: 30 – 4 + 1.
- 30 – 4 = 26, and 26 + 1 = 27.
Why people miss it
The trap is doing 30 – 20 first. That gives a very different answer.
What answer did you get before checking?
