Question

A man travels 300 km partly by train and partly by car. He takes 4 hours if the
travels 60 km by train and the rest by car If he travels 100 km by train and the
remaining by car he takeS 10 minutes longer. Find the speeds of the train and the
car separately​

Answer 1

This is the solution for your question, and paper edit hone me thoda dikkat ho rhi thi isliye maine answer paper me hi likh Diya hai aur yahan par bhi likhe de rha hu, aur koi dikkat nhi.

x= 60km/ph. is the answer of your question

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Answer 2

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Let the speed of train and bus be u km/h and v km/h respectively.

According to the question,

$\frac{60}{u} + \frac{240}{v} = 4$....(i)

$\frac{100}{u} + \frac{200}{v} = 4 + \frac{10}{60} = \frac{25}{6}$....(ii)

Let $\frac{1}{u} = p\: and \frac{1}{v} = q$

The given equations reduce to:

60p + 240q = 4 ....(iii)

100p + 200q = $\frac{25}{6}$

600p + 1200q = 25....(iv)

Multiplying equation (iii) by 10, we obtain:

600p + 2400q = 40....(v)

Subtracting equation (iv) from equation (v), we obtain:

1200q = 15

q = $\frac{15}{1200} = \frac{1}{80}$

Substituting the value of q in equation (iii), we obtain:

60p + 3 = 4

60p = 1

p = $\frac{1}{60}$

:. p = $\frac{1}{u} = \frac{1}{60}$, q = $\frac{1}{v} = \frac{1}{80}$

u = 60 km/h , v = 80 km/h

Thus, the speed of train and the speed of bus are 60 km/h and 80 km/h respectively.

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