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mrs_skeptik [129]
3 years ago
10

Jack and Jim went biking. Jack biked for 5 1/3 hours with average speed 12 1/2 miles per hour. Jim traveled exactly 1 1/5 as far

as Jack did. How long was Jim’s trip?
Mathematics
1 answer:
skad [1K]3 years ago
8 0

Answer:

jim traveled 80 miles

Step-by-step explanation:

how far did jack travel

d =rt

d = 12 1/2 miles per hour * 5 1/3 hours

change to improper fractions

12 1/2 = (2*12 + 1 /)  2 = 25/2

5 1/3 = (3*5+1) /3  = 16/3


d = 25/2 * 16/3 = 25/3 * 16/2 = 25/3 *8 =200/3 miles


jim traveled 1 1/5 times as far

change this to an improper fraction

1 1/5 =  (5*1+1) /5 = 6/5

jim = jack * 6/5

jim = 200/3 * 6/5

     200/5 * 6/3

      40 * 2

     80

jim traveled 80 miles


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Then, as per given,

0.05(x+16)+0.25 x= 5.90 \\\\\Rightarrow\ 0.05x+0.8+0.25x=5.90\\\\\Rightarrow\ 0.30x=5.9-0.8\\\\\Rightarrow\ 0.30x=5.1\\\\\Rightarrow\ x=\dfrac{5.1}{0.30}=\dfrac{51}{3}\\\\\Rightarrow\ x=17

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3 0
3 years ago
At an amusement park, 8 out of 80 tickets sold were discount tickets. What percentage of the tickets were discount tickets?
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Kelly's teacher asked her to draw a triangle that doesn't have any lines of symmetry what type of triangle should Kelly draw an
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Picture attached please help
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D

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red blood cell = 0.000009 = 9 × 10^{-5}

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