Imagine that you won $25,000. Great deal! You decided to invest it (good idea!). You invested one part of it in the Apple Valley Bank, second part in the Green Bank, and the third part in the Blue Bank. After one year, you received a total of $1,620 in simple interest from the three investments. The Apple Valley Bank paid 6% annually, the Green Bank paid 7% annually, and the Blue Bank paid 8% annually. There was $6,000 more invested in the Green Bank than the Blue Bank. What is the amount you invested in each category.

About 1/3 of Samuel’s paycheck goes to housing, 1/6 goes to utility bills, 1/8 goes for his car, and 1/5 goes for food. How much of his paycheck is left for entertainment?

At the beginning of the year Anna invested a portion of her $90, 000revenue from the sale of her house in an account that earns 8% annualsimple interest, and the remainder in an account that earns 9% annualsimple interest. If at the end of the year, she earned total interest of$7760, how much did she invest in each account?

David N. is planning to open a sporting goods store. However, the initial investment is $120,000. He currently has this money in a certificate of deposit earning 10 percent. He may leave it there if he decides not to open the store. If he opens the store and it is successful he will generate a profit of $50,000. If it is not successful, he will lose $90,000. For David to prefer this (opening the store) to investing in a CD, the probability of a successful store will have to be at least