It's me, flflvm.

The question I'm going to share today is from my favourite book - Mensa Logic Question.

Hope you enjoy it!

3 friends went to restaurant.

And they ate amount of 300 dollars in total.

So they paid 100 dollars each.

But then the owner of restaurant said for 3 people, there's discount.

and he told cash counter to give 50 dollars back.

But cash counter swiped 200 dollars and just gave 30 dollars back.

So, at the moment three people paid 100 each and receive 10 dollars each.

That means they used 90 dollars each.

90 * 3 = 270 dollars

and if i add with the amount cash counter sneaked,

it's 270 + 20 = 290 dollars.

Where did 100 dollars go?

flflvm97 Dec 16, 2014