Answer:
9.76 ounces
Step-by-step explanation:
Ian has 12.2 ounce bottle of ketchup.
He uses [tex]\frac{1}{20}[/tex] of the ketchup every time he has a buffalo burger.
[tex]\frac{1}{20}[/tex] × 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.
