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a) 12 : 13
b) 9 : 10
c) 13 : 12
d) 10 : 9
correct answer is : b) 9 : 10
Explanation
Here, A : B = 7 : 5
\therefore\ \frac{A}{B}\ =\ \frac{7}{5}
And, B : C = 9 : 14
\therefore\ \frac{B}{C}\ =\ \frac{9}{14}
So, \frac{A}{B}\ \times\ \frac{B}{C}\ =\ \frac{7}{5}\ \times\ \frac{9}{14}
\therefore\ \frac{A}{C}\ =\ \frac{9}{10}
\therefore A : C = 9 : 10
Ans: A : C = 9 : 10
