alleryजर a : b = 3 : 4 आणि b : c = 5 : 7, तर a : c आहे
A3 : 7
B15 : 28
C12 : 35
D21 : 20
Answer & Solution
Correct answer: B. 15 : 28
**सामान्य b:** a : b = 15 : 20 (5 ने गुणाकार करा)
b : c = 20 : 28 (4 ने गुणा).
**तर a :** c = 15 : 28.
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