Question

6 cows can graze a field in 28 days. How long would 14 cows take to graze the same field ?

Answer 1

Let 14 cows can graze in x days

$\begin{array}{cccc}Cows& Days& Cows& Days\\ 6& 28& 14& x\end{array}$

(more cows, less days)

$\therefore$ By inverse proportional

6 : x :: 14 : 28

$x=\frac{6\times 28}{14}=12$

$\therefore$ Required number of days = 12