Mr. tally inherited $200,000. he used a portion of the inheritance to build a house. he invested the rest of the money for one year as follows: 1/3 at 12% and 2/3 at 15%. the interest from both investment was $8,400. how much did it cost to build the house?

Juanita wade's new car has an msrp of $28,902.11 including title and processing fees. the premier package which includes surround sound and dvd player costs three times the amount of the in-style package which includes leather seats and select wheels. the total cost of her new car was $34,290.08 which included the 6.5% sales tax. find the cost of the premier package to the nearest cent.