Arithmetichard · Past Paper
If a:b = 2:3 and b:c = 5:7, find the triplicate ratio of a:c.
A1000:9261
B8:27
C125:343
D10:21
✓ Correct Answer: A — 1000:9261
a/c = (2/3)*(5/7) = 10/21. Triplicate ratio = (10)^3 : (21)^3 = 1000 : 9261.
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