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Maths Puzzle
Numerical Ability
How much water should be added to 30 gallons of a solution that is 70% antifreeze in order to get a mixture that is 60% antifreeze?
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book Other Question
What is the velocity measured in meters per second: v(t)=-9.8t+50. The time in seconds is 2.
I tried using the distance=rate x time: v(2)=-9.8(2)+50
I am not sure if this is the
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