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A man covers 1/4 of his journey at 20 km/hr and the remaining at 30 km/hr. He takes 15 hour in total journey. The distance total journey is ?

Option 1)

400 km

Option 2)

390 km

Option 3)

440km

Option 4)

420 km

Option 5)

460 km

Answers (1)

best_answer

If the distances are x/4 & 3x/4 respectively.

As per the given data,

$\frac{\frac{x}{4}}{20}+\frac{\frac{3x}{4}}{30}= 15$

$\frac{x}{80}+\frac{3x}{120}=15$

9x = 15 x 240

x = 400

Posted by

rishi.raj

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