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If a : b = 4 : 7 and b : c = 5 : 6 than a : b : c = ?

A 8 : 15 : 12

B 20 : 35 : 42

C 20 : 35 : 24

D None

Solution

Correct Answer: Option B

a:b=4:7
এবং b:c=5:6
=(4×5):(7×5)
=20:35

এবং b:c=5:6
      =(5×7):(6×7)
      =35:42

a:b:c=20:35:42

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