Which ratio is equivalent to 4/16 a. 2: 4•• b. 6 to 20 c. 8: 32 d. 12 to 64 write the ratio as a unit rate. 286 miles in 5 1/2 hours a. 36 miles per hour b. 52 miles per hour •• c. 57.2 miles per hour d. 114.4 miles per hour which typing time is the fastest? 220 words in 8minutes 600 words in 12 minutes 350 words in 10 minutes 225 words in 5 minutes ••

1) Which ratio is equivalent to [tex] \frac{4}{16} [tex]?
[tex] \frac{4}{16} * 2 = \frac{8}{32} [tex], or 8:32.

2) Write the ratio as a unit rate [tex] ( \frac{286miles}{5 \frac{1}{2} hours} ) [tex]
Set the equation up like this:
[tex] \frac{286miles}{5 \frac{1}{2} hours} = \frac{Xmiles}{1 hour}\\
286*1=(5 \frac{1}{2})*x\\
286 = \frac{11x}{2}\\
11x= 572 [tex]
x = 52 [tex] \frac{miles}{hour} [tex]

3) Which typing time is fastest? I answered this earlier, refer to it please refer to it: 

Ithink the answer is b