1)A woman invested some money at 8% and some at 9% annual simple interest. The interest for...

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Question:

1)A woman invested some money at 8% and some at 9% annual simple interest. The interest for 1 year on the combined investment of $10,000 was $880. How much was invested at each rate?

8% annual interest	$
9% annual interest	$

2) Write a system of two equations in two variables to solve the problem.

It cost a family of 9 a total of $283 for general admission tickets to the San Diego Zoo. How many adult tickets and how many child tickets were purchased?

adult tickets

child tickets

Note:Write a system of two equations in two variables to solve the problem.