One dozen = 12
3 dozens = 12*3 or 36
To make 36 cookies you need 4 eggs and 1/2cups of chocolate chips.
Ben wants to make 12 dozen or 144 cookies.
144/36 = 4
To find out how many chocolate chips and eggs he needs we can multiply the amount of chocolate chips and eggs it takes to make 3 dozen by 4 to find out how many chocolate chips and eggs he needs to make 12 dozen.
4 *4= 16 He will need 16 eggs
4*1/2= 2 He will need 2 Cups of chocolate chips.