I bought 4 dozens of eggs at $10.00 each dozen. 6 eggs where broken. How much money was waste.

4 dozens of eggs at $10.00 each

=> 4 dozens of eggs = 12 (1 dozen) x 4

=> 48 pieces of eggs at 10.00 each

=> 48 x 10 = 480 dollars

Now, 6 eggs were broken, so that is equals to:

=> 6 eggs x 10 dollars

=> 60 dollars

Thus, out of 4 dozens of eggs bought at $10.00 each which is 480 dollars all in all, 60 dollars were wasted.

The formula is this:

=> (4 x 12) - 6 x 10

=> 48 - 6 x 10

=> 42 x 10

=> 420