exam Maths Puzzle Numerical Ability

I need help with this equation find three consecutive odd integers such 4 times the product of the sencond and third is 12 times greater that 20 times the sum of the first and second

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exam Other Question

soybean meal is 18% protein; cornmeal is 9% protein. How many pounds of each should be mixed together in order to get 360-lb mixture that is 13% protein? I have tried this for 2 days and still have not got the answer from the key. Could someone show me how to do this.

Graph each of the following inequalities.

4x+y greater than or equal to 4