A person travels a certain distance at 3 km / hr and reaches 15 min late. If he travels at 4 km / hr, he reaches 15 min earlier . The distance he has to travel is __
Created: 5 years ago |
Updated: 2 weeks ago
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Let the time taken to travel at speeds 3 km/h and 4 km/h be t1 and t2 respectively.
So, t1 - t2 = 15 - ( - 15) = 30 minutes = 0.5 h
Now, let the distance travelled be = x km
So, (x / 3) - (x / 4) = 0.5
⇨ x = 6 km
So, t1 - t2 = 15 - ( - 15) = 30 minutes = 0.5 h
Now, let the distance travelled be = x km
So, (x / 3) - (x / 4) = 0.5
⇨ x = 6 km
Md Azizur Rahman
Founder of Satt
ঐকিক নিয়ম (Unitary Methods):
একটি জিনিসের দাম, ওজন, পরিমাণ ইত্যাদি বের করে নির্দিষ্ট সংখ্যক এই জাতীয় জিনিসের দাম, ওজন, পরিমাণ ইত্যাদি বের করার নিয়মকে ঐকিক নিয়ম বলে।
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