100% - $328 - the price with the 30% off
130% - $?
10% - $?
Let's find by proportion:
1) [tex] \frac{328*130}{100} [/tex] = $426,4 - the price of the ski set without the EXTRA 30% off.
2) [tex] \frac{426,4*10}{100} [/tex] = $42,64 - the 10% off.
3) $426,4 + $42,64 = $469,04 - the original selling price of the ski set.
