Question

The ratio of the number of cows to buffaloes that Kondajijanna owns is 3 : 7. If he owns 28 buffaloes, what is the number of cows he has?

Answer 1

Ratio of the number of cows to the number of buffaloes = 3:7$=\frac{3}{7}$
Number of buffaloes with Kondajianna = 28
Now, let the number of cows with Kondajianna be x.
∴ Ratio of the number of cows to the number of buffaloes = x:28$=\frac{x}{28}$

Because the two ratios are the same, $\frac{3}{7}=\frac{x}{28}$.
Also, because the denominator of the second ratio is four times the denominator of the first ratio, x = 3 × 4 = 12.
Thus, the number of cows with Kondajianna is 12.