Question

You bought a new shirt for $15.95 and 5 pairs of socks. Your friend bought 10 pairs of socks and spent $4.20 less then you. How much did each pair is socks cost

Answer with an equation with variable. Make the variable the cost of socks.

Answer 1

Let s represent the cost of a pair of socks.
.. 15.95 +5s -4.20 = 10s
.. 11.75 = 5s
.. 2.35 = s

Any of the above equations will get you to the cost of a pair of socks, which is
$2.35.