Apenny weighs about 0.1 oz. how much is a pound of pennies worth

1.       A penny weighs about 0.1 oz.
Now, we need to find the weights of pennies in pounds
=> always remember that in every 1 oz, there is 0.0625 pounds.
Since 0.1 is 1/10 of 1 oz, we need to find the value of it in pounds.
=>  0.0625 pounds / 10
=> 0.0625 pounds.
Therefore, in 0.1 oz of  penny is equivalent to 0.00625 pounds.
In problem like this, before determining the answer, you need to make sure that both unit of measurements are the same. If not, then try to convert.

The correct answer is 10%