The best way to do this one is by multiplication. If you have two dozens of eggs, you multiply two by a dozen to find out how many eggs you have: 2 *12=24. Similarly, if you have two fifths **of **20 apples, you multiply 2/5 by 20 to find out how many apples you have: (2/5)*****20 = 8.
20/5=4 (to find a fifth of 20 apples) 4x2=8 (to find what 2 fifths is) **
** He used 8 apples
Ron used 8 apples to make pies after using \frac{2}{5} of the total 20 apples he had. This was found by first calculating one-fifth of 20 apples and then doubling that amount. So, the calculation resulted in 8 apples used for the pies.
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