12 Calculate this runner completed a 100-meter race with a time of 13.75 seconds. What was her average speed?
Identify
A. What do you know?
B. What do you want to find out?
Plan
C. Draw and label a sketch:
D. Write the formula:
E. substitute into the formula:
F. Calculate and simplify
G. check that your units agree

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?