Mathematics
OpenStudy (anonymous):

to make 6 dozen cookies, you must use 4eggs. how many eggs are needed to make 42 dozen cookies? use a proportion to solve. to make 6 dozen cookies, you must use 4eggs. how many eggs are needed to make 42 dozen cookies? use a proportion to solve. @Mathematics

OpenStudy (saifoo.khan):

Dozen : egg 6 : 4 42 : x Cross multiply.

OpenStudy (anonymous):

ok

OpenStudy (anonymous):

wait what next im confuzed

OpenStudy (anonymous):

42dozen x (4egg/6dozen) = 28 eggs. Using dimensional analysis the dozen crosses out and you get your answer in eggs.

OpenStudy (saifoo.khan):

lol, $6 \times x = 4 \times42$

OpenStudy (anonymous):

ok so my answer is... one sec