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makkiz [27]
3 years ago
11

Distance: Jack and Jill start from the same point and walk in'opposite directions. Jack

Mathematics
1 answer:
777dan777 [17]3 years ago
6 0

Answer:

t = 6 km/hour

And, J would be 4 km per hour

Step-by-step explanation:

Let us assume the speed of Tom be T

And, the Speed of Jim  be J

Given that  

T - J = 2 km /hr ...........(i)

After 3 hours distance between them  = 30 km

As they are walking in the opposite direction

Thus,  

Net speed =T + J

L ÷ (T+J) = 3

30 ÷ (T+J) = 3

T +J =10 ..............(2)

After solving these two equations

2T = 12

t = 6 km/hour

And, J would be 4 km per hour

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7 0
3 years ago
You are biking to the park. After six minutes 40% of the distance still need to be traveled. How long does it take to bike to th
nikklg [1K]

Answer:

y = (100-10x)\%

It takes <em>10 minutes</em> to the park.

Step-by-step explanation:

Given that:

Time taken = 6 minutes

Distance left to be traveled = 40%

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The equation to represent the distance y, that still needs to be traveled after x minutes.

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As per given statement, distance traveled in 6 minutes = 60%

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After 2 minutes, distance traveled = 20%

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Therefore, the equation is:

y = (100-10x)\%

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0 = 100 -10x\\\Rightarrow 10x = 100\\\Rightarrow x = \bold{10\ minutes}

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3 years ago
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