Yesterday, Johnny's snack Shack went through 1 7/10 bottles of ketchup, they used 1/2 as much mustard as ketchup, how many bottles of mustard did they go through?

Mar 6, 2017

$\frac{17}{20}$

Explanation:

Rewrite the number of ketchup bottles as a mixed fraction:

$1 \left(\frac{7}{10}\right) = \frac{17}{10}$

Now they used half as many mustards. That means you multiply the number of ketchup bottles to $\frac{1}{2}$:

$\frac{17}{10} \times \frac{1}{2} = \frac{17}{20}$