$\frac{48}{15}=\frac{k}{37\mathrm{.}5}$

$\frac{21}{p}=\frac{252}{78}$

$\frac{2\mathrm{.}3}{1\mathrm{.}6}=\frac{46}{w}$

A recipe calls for $\frac{3}{4}$ cup of sugar and $\frac{1}{2}$ cup of brown sugar. You are reducing the recipe. You will use $\frac{1}{6}$ cup of brown sugar. How much sugar will you use?

A calculator has $50$ keys in five colors: gray, black, blue, yellow, and green.

a$.$ There are $6$ gray keys for every $7$ blue keys. Write the possible ratios for gray to blue keys.

b$.$ There are $6$ gray keys for every $11$ black keys. Write the possible ratios for gray to black keys.

c$.$ There are $6$ gray keys for every $11$ black keys. Also, the number of black keys is $2$ less than twice the number of gray keys. Use your answer to part $($b$)$ to determine how many gray keys and how many black keys there are.

d$.$ There is $1$ yellow key for every $1$ green key. How many keys of each color are there?