Soybean meal is 18% protein; cornmeal is 9% protein. how many pounds of each should be mixed together in order to get 360lb mixture that is 11% protein?

Question

How many pounds of the cornmeal should be in the mixture?

How many pounds of the soybeans meal should be in the mixture?

The perimeter of a rectangle is 150 inches. The length exceeds the with by 3 inches. Find the length and the width.
The length is _______-inches
The width is __________inches

The perimeter of a rectangle is 136 m. The length is 2m more thatn twice the width. Find the dimensions.
What is the length?________m
What is the width?__________m

Answer 1

You will have better luck getting a reply if you restrict yourself to one question at a time.
I will do the first one....
let the amount of cornmeal be x pounds
then the amount of soybean is 360-x pounds

so 18/100(360-x) + (9/100)x = (11/100)360

multiply each term by 100, expand and solve

... I got x = 280