Question

There were 21 pumpkins in a garden patch. Children picked 4/6 of the pumpkins.

Answer 1

The children picked 14 pumpkins. 4/6 is another way to say 2/3. So the children picked 14 pumpkins because 2/3 of 21 is 14. 

Answer 2

First, simplify $\frac{6}{4} into \frac{3}{2}$

Second, $21 - \frac{3}{2}$

= 19.5