SOLUTION: The problem ask how many miles are ran on two days. First day is 8 3/4 mi. Second day is 7 1/5 mi. I am trying to show my daughter how to compute this. We made the fraction int

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: The problem ask how many miles are ran on two days. First day is 8 3/4 mi. Second day is 7 1/5 mi. I am trying to show my daughter how to compute this. We made the fraction int      Log On


   

Question 685560: The problem ask how many miles are ran on two days. First day is 8 3/4 mi. Second day is 7 1/5 mi. I am trying to show my daughter how to compute this. We made the fraction into a mixed number by multiplying and adding to get HESE8 3/4 + 27/4 and 7 1/5 = 36/5. THEN WE ADDED THESE BY FINDING A COMMON DENOMINATOR. 20 SO IT BECOMES 144/20 + 135/20= 279/20 SIMPLIFIED TO 13 16/20. THEY GIVE THE ANSWER AND WANT IT TO THE NEAREST MILE. THE ANSWER IS 16. WHAT DID WE DO WRONG? THANKS

Answer by MathTherapy(10552) About Me  (Show Source):
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The problem ask how many miles are ran on two days. First day is 8 3/4 mi. Second day is 7 1/5 mi. I am trying to show my daughter how to compute this. We made the fraction into a mixed number by multiplying and adding to get HESE8 3/4 + 27/4 and 7 1/5 = 36/5. THEN WE ADDED THESE BY FINDING A COMMON DENOMINATOR. 20 SO IT BECOMES 144/20 + 135/20= 279/20 SIMPLIFIED TO 13 16/20. THEY GIVE THE ANSWER AND WANT IT TO THE NEAREST MILE. THE ANSWER IS 16. WHAT DID WE DO WRONG? THANKS

Converting 8%263%2F4 to a fraction gives: 35%2F4, not 27%2F4

8%263%2F4+%2B+7%261%2F5

35%2F4+%2B+36%2F5

%28175+%2B+144%29%2F20

319%2F20 ----- 15%2619%2F20 ≈ highlight_green%2816%29

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