[tex] \rm \hookrightarrow \: 5 \: dozen \: cookies = 12×5 = 60 Cookies[/tex]
60 cookies need 4 cup of flour
[tex] \rm\hookrightarrow1 \: cookie \: need \dfrac{4}{60} cup \: of \: four [/tex]
[tex] \rm \hookrightarrow90 \: cookies \: need \dfrac{4}{60} \times 90 \: cu p \: of \: flour [/tex]
[tex] \rm \hookrightarrow = \dfrac{4}{2} \times 3[/tex]
[tex] \rm \hookrightarrow = 2 \times 3 = 6 \: cups \: of \: flour[/tex]
