Book Maths Puzzle Percentage

Two gasohol mixtures are available: one with 6.35% alcohol and the other with 11.28% alcohol. How many gallons of the 6.25% mixture must be added to 25 gallons of the other mixtur

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I always have problems with these word problems: Find three consecutive even numbers so that the sum of the first and third numbers is 22 less than three times the second number. This one is hard, I would love it if you helped me out on this please and thank you!

Kelsie An airplane left an airport at 1pm traveling at a rate of 242 mi/hr. After traveling some distance, one engine failed, and the airplane returned to the field at a reduced rate of 1