Assignment:
Q1. The perimeter of a rectangle is 60m. The length is 9m more than twice the width. Find the dimensions.
Q2. Soybean meal is 16% protein; cornmeal is 8% protein. How many pounds of each should be mixed together in order to get 320lb mixture that is 11% protein?
- How many pounds of the cornmeal should be in the mixture?
- How many pounds of the soybean should be in the mixture?
Q3. A student a $9.25 purchase at the bookstore with a $20 bill. The store has no bills and gives the change in quarters and fifty cent pieces. There are 30 coins in all. How many of each kind are there?
Provide complete and step by step solution for the question and show calculations and use formulas.