At Blooming Gardens nursery, they are currently running the following promotion: Buy three trees of the same kind at the regular price and get the fourth at 80% off. Jocelyn is needing some trees for her backyard and decided to buy four red oak trees using the promotion. The regular price for a red oak tree is $390.00. Based on a tax rate of 8.25%, Jocelyn ended up saving $ by using the promotion.

Question

anonymous · Answer

3 at regular price = 3 * 390 = 1170
4th at 80% off ---- means you pay 20% --- 0.20(390) = 78
for a total of : 1170 + 78 = 1248

if there was no promotion, it would cost : 390 * 4 = 1560

for a savings of : 1560 - 1248 = $ 312

anonymous · Answer

oh...wait..I forgot the tax rate...hold on

anonymous · Answer

Thank you so much :D

anonymous · Answer

Lol ok

anonymous · Answer

tax rate added on trees with promotion : 1248 + .0825(1248) = 1248 + 102.96 = 1350.96

tax rate added on trees without promotion : 1560 + .0825(1560) = 1560 + 128.70 = 1688.70

so the savings with the tax rate included are : 1688.70 - 1350.96 = $ 337.74

anonymous · Answer

Ok thank you generally I'm not good with prevents so thank you for the help