Question

16 cows eat some straw in 3 days, how many days 4 cows will eat this straw​

Answer 1

3/4 days

16 cows = 3 days

1 cow = 3/16 days

4 cows = 4 * 3/16 = 3/4

Answer 2

$16 \div 3 \times 4 = 21.33$

if 16 cows eat in 3 days so one cow will eat in 16/3 days and 4 cows will eat in16/3×4 days