Question

A muffin recipe calls for 2/5 tablespoon of vanilla extract to make 6 muffins. Arthur is making 18 muffins. How much vanilla extract does he need?

Answer 1

`x-vanilla\ extract\\\\From\ proportion:\\\\(2)/(5)\ \ \ -\ \ \ 6\\x\ \ \ \ -\ \ 18\\\\6x=(2)/(5)\cdot18\\\\6x=(36)/(5)\ \ \ \ \ \ \ |\cdot(1)/(6)\\\\x=(36)/(5)\cdot(1)/(6)\\\\x=(6)/(5)=1(1)/(5)\\\\He\ need\ 1(1)/(5)\ vanilla\ extract.`