Math Riddles

These Math Riddles are based on math concepts and can be solved with a bit of math and logic. These fun riddles can surely give you a tough time.

Gold for 7 Days of Work

A contractor is doing work for 7 days at your home. You have a gold bar that is worth $7000. You need to pay him $1000 every day and $7000 in total. You have to pay him in gold by using the gold bar. How can you pay him $1000 worth of gold everyday by cutting the gold bar only twice?

Answer

By cutting the gold bar twice, you can have 3 pieces of gold.

Let the gold bar pieces be GB1, GB2 and GB3. They are worth $1000, $2000 and $4000 respectively.

Day1: Give GB1

Day2: Take GB1, Give GB2

Day3: Give GB1

Day4: Take GB1, GB2 and give GB3

Day5: Give GB1

Day6: Take GB1, Give GB2

Day7: Give GB1

Shirt For $97

A boy saw a shirt for $97 but does not have enough cash. So he borrowed $50 from his mom and another $50 from his dad.

He bought the shirt, and got back $3 as change. He gave his dad $1 and his mom $1 and kept the other $1 for himself.

Now mom and dad paid $10 each and got back $1 each. So they paid $49 each, totaling $98. The boy has another $1, adding up to $99. Where is the missing dollar?

Riddle Answer