This simple math problem is driving everyone nuts. Can you solve it?
via Shutterstock

There’s nothing like a simple math problem to make you feel really stupid.

PeerieBresks posted a simple math riddle on Mumsnet, a parenting forum, and it racked up over 500 comments because people couldn’t agree on the correct answer.

Here’s the question:


A man buys a horse for $60. He sells the horse for $70. He then buys the horse back for $80. And he sells the horse again for $90. In the end, how much money did the man make or lose? Or did he break even?

Most of the Mumsnet users posted a sum between $10 and $30 and a few even said he broke even.

What do you think?

Scroll down for the answer.

The correct answer is: $20

The best way to tackle the problem is to approach each transaction as separate: -60 + 70 = 10 and -80 + 90 = 10.

The man made $10 with each transaction which adds up to $20.

This article originally on someecards.

Ready for the weekend? Of course, you are. Here's our weekly dose of good vibes to help you shed the stresses of the workweek and put yourself in a great frame of mind.

These 10 stories made us happy this week because they feature amazing creativity, generosity, and one super-cute fish.

1. Diver befriends a fish with the cutest smile

Hawaiian underwater photographer Yuki Nakano befriended a friendly porcupine fish and now they hang out regularly.

Keep Reading Show less