Question 1172980
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(1) His base price is $120; 10% off of that makes 90% of $120.  The sale price is x  = 0.90($120). Calculate that sale price, x.<br>
(2) That sale price is 20% over what he paid for each watch; i.e., it is 120% of what he paid, or 1.20 times what he paid.  Let y be what he paid for each watch; then<br>
{{{1.20(y) = x}}}<br>
Solve for y using the value of x from step (1).<br>