24:15 would be the simplified version, if that's what you meant.
Step-by-step explanation:

Answer:
0.25 c to the second
Step-by-step explanation:
i think
Answer:
1/3 = 4/12
1/4 = 3/12
Step-by-step explanation:
1/3 * 4/4 = 4/12
1/3 = 4/12
1/4 * 3/3 = 3/12
1/4 = 3/12