brandon is baking cookies for a school bake sale. if he can make 2 dozen cookies in 23 minutes which is a reasonable estimate of the amount of time it will take him to make 12 dozen cookies?
estimate : 2 dozen cookies = 24 cookies....so he can make 24 cookies in 23 minutes......12 dozen = 144 cookies....he can make 144 cookies in 143 minutes. <== this is the estimate
2/23 = 12/x 2x = 276 x = 276/2 x = 138 <== this is the actual minutes
