Comparing Unit Rates with Fractions

A store sells two kinds of candles, scented and unscented. The candles burn at different rates. Which kind of candle burns more in one hour?

Scented:  $\frac{1}{8}$  inch in  $\frac{1}{4}$  hour

Unscented:  $\frac{1}{9}$  inch in  $\frac{1}{3}$  hour

• Scented

• Unscented

Yesterday, Noah ran  $2\frac{1}{2}$  miles in  $\frac{3}{5}$  of an hour.  

Emily ran  $3\ \frac{3}{4}$  miles in  $\frac{5}{6}$  of an hour.

Anna ran  $3\ \frac{1}{2}$  miles in  $\frac{3}{4}$  of an hour.

• Noah

• Emily

• Anna

Sports drink A is 8 ounces and costs $1.28. Sports Drink B is 12 ounces and costs $1.68.

What is the difference in the cost per ounce?

• $0.89

• $2.00

• $0.20

• $0.02

Sam's pinewood derby car goes  $2\frac{1}{2}$  miles per hour in the time trial. 

Which TWO of the following cars go the same speed in the time trial?

•  $\frac{3}{4}$  of a mile in  $\frac{3}{10}$  of an hour

•  $1\frac{1}{2}$  miles in  $\frac{3}{4}$  of an hour

•  $\frac{3}{5}$  of a mile in  $1\frac{1}{2}$  hours

• 2 miles in  $\frac{5}{6}$  of an hour

•  $\frac{5}{6}$  of a mile in  $\frac{1}{3}$  of an hour

Oreos $2.98 for 15.5 oz.

or

Chips Ahoy $2.50 for 14 oz.

Find the unit price of each and choose the better deal.

• Oreos

• Chips Ahoy