Arithmeticmedium · Past Paper
If 5a = 7b and 4b = 5c, then a:c is:
A49:25
B25:49
C7:4
D35:20
✓ Correct Answer: D — 35:20
a/b = 7/5, b/c = 5/4. a/c = (7/5)*(5/4) = 7/4 = 35/20.
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✓ Correct Answer: D — 35:20
a/b = 7/5, b/c = 5/4. a/c = (7/5)*(5/4) = 7/4 = 35/20.
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