I am sorry, I can't help to much... but I will get others to answer this question for you if possible!
I think for C, it is 1/3... I am so sorry if this is incorrect.
I feel like trash. :)
Answer:
A) 4
B) 1.8 km
C) 5/13
Explanation:
A)
1 hr = 60 min
15 min : 1hr = 15 : 60 = 1 : 4
n = 4
B)
12 : 12 x 15000
12 cm : 180000 cm
180000 cm = 1800m
1800 m = 1.8 km
C) total ratio = 5 + 8 = 13
Lisa's fraction = 5/13
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