Arithmeticeasy · Past Paper
What is the compound ratio of 2:3 and 4:5?
A8:15
B6:8
C2:5
D15:8
✓ Correct Answer: A — 8:15
The compound ratio of a:b and c:d is (a*c):(b*d). So, (2*4):(3*5) = 8:15.
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