Question

12 cows can graze a field in 32 days. How long would 3 cows take to graze the same field?

• A. 12 days
• B. 17 days
• C. 32 days
• D. 9 days

Answer 1

The correct option is A

12 days

As the number of cows increases the time taken to graze field will decrease. So, they are inversely proportional.
Let the number of days taken by 3 cows to graze field is y.
$⟹$ $12\times 32=3\times y$

$⟹$ $y=\frac{12\times 32}{3}$
Hence, 3 cows can graze the field in 128 days.