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If a : b = c : d = e : f = 1 : 2, then (3a + 5c + 7e) : (3b + 5d + 7f) is:

A
1:2
B
1:4
C
3:5:7
D
2:1
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🇮🇳 हिंदी Hindi Version
यदि a : b = c : d = e : f = 1 : 2 है, तो (3a + 5c + 7e) : (3b + 5d + 7f) क्या है?
A
1:2
B
1:4
C
3:5:7
D
2:1
Mathematics & Logic 259/939
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