i need help math
posted by eduarda on .
Ines became the manager of an electronics store. She decided to provide customers with a great holiday deal. A customer will be able to purchase 3 big screen televisions at the following price, the first one at the full price of $750, the second one will be discounted 45% and the 3rd television discounted at 80%. If tax is 6% what is the the sales price for someone who purchases all three televisions(what they will pay for all three tv's with tax!)?

1st TV = 750
2nd TV = 750 * 0.55 = 412.50
3rd TV = 750 * 0.2 = 150
1.06(750 + 412.5 + 150) = $1,391.25 
i got $192

192 for what?

for the problem

there were some ducks in the pond.28 ducks flew away.7 more arrived at the pond.now there are 43 ducks in the pond.how many ducks were in the pond to start