18??
two times as old.
36 divided but 2 is 18
Answer:wxample:
Step-by-step explanation:each of the parts into which something is or may be divided.
"a large segment of the local population" · [more]
synonyms:
piece · part · bit · section · chunk · division · portion · slice · fragment · [more]
72 is the denominator because 24 multiplied by 3 is 72 and 18 multiplied by 4 is 72