If 5a : 2b = 3: 2 and 3b : 7c = 5: 7, then a:b:c is equal to :
2019
If 5a : 2b = 3: 2 and 3b : 7c = 5: 7, then a:b:c is equal to :
- A.
5:3:7
- B.
7:5:3
- C.
3:5:3
- D.
5:7:3
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Correct answer: C
Given: 5a:2b=3: 2⇒a:b=3:5 3b:7c=5:7⇒b:c=5:3 Combine both → a:b:c=3:5:3