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Answer :

85km per hour is the amount cause you divide by 2

Answer: 77.5

Explanation:

Okay so, You have 3 numbers in this equation, 170, 2, and 70.

Divide 170 by 2= 85

Add 85 + 70= 155

Now divide 155 by 2= 77, R1 = 77 1/2. You can turn 77 1/2 to 77.5

Answer: 77.5

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