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Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?

When a valve is open 281 gallons of water go through it in one hour the number of gallons that would go through in 94 hours is