To solve;
First subtract the change received from the amount paid
That is;
$20 - $5.03 =$14.97
This implies that the cost of 3 pairs of socks is $14.97
Since each pair costs the same amount, to get the cost of one pair, we will simply divide $14.97 by 3
That is;
$14.97/3 =$4.99
Hence each pair of socks costs $4.99
