Answer:
9.76 ounces
Step-by-step explanation:
Ian has 12.2 ounce bottle of ketchup.
He uses \(\frac{1}{20}\) of the ketchup every time he has a buffalo burger.
\(\frac{1}{20}\) × 12.2
= 0.61 ounces every time
He has eaten 4 buffalo burgers. So he used ketchup = 0.61 × 4
= 2.44 ounces
Now the amount of ketchup are left = 12.2 - 2.44
= 9.76 ounces
9.76 ounces of ketchup are left after Ian has eaten 4 buffalo burgers.
