The cost of pair of jeans is $ 58
<em><u>Solution:</u></em>
Let "x" be the cost of 1 jean
Then, cost of pair of jeans = 2x
Let "y" be the cost of a top
<em><u>Mari spent 81.18 on a pair of jeans and a top</u></em>
Therefore,
2x + y = 81.18 ------ eqn 1
<em><u>The top cost 80% of the cost of the jeans</u></em>
cost of top = 80 % of cost of jeans
y = 80 % of x
y = 0.8x ---------- eqn 2
<em><u>Substitute eqn 2 in eqn 1</u></em>
Thus cost of pair of jeans = 2x = 2(29) = 58
Thus cost of pair of jeans is $ 58