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Ling drove at an average speed of 78 km per hour for 45 minutes. She then increased her average speed by 6 kilometers per hour for 20 more minutes before reaching home. Find the total distance Ling traveled.

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what is 78km/hr * 45/60hr+6km/nr*20/60?

78*3/4+6*1/3=you do it.

58.7

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