M is the midpoint of line segment PQ. MQ = 5x + 8 and PQ = 6x + 65, find x

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Abby is preparing fruit punch for her party. she starts with a bowl filled with liquid that has 1/2 fruit juice and 1/2 sprite, but she decides it's too fruity. so she pours out 1/4 of the liquid, and then fills the bowl up again with sprite. what fraction of the punch is now sprite?

Tom drove 206 miles in 3.9 hours. estimate his average speed.