If two planes leave the same airport at 1:00 p.m., how many miles apart will they be at 3:00 p.m. if one travels directly towards north at 150 miles per hour and the other travels directly towards west at 200 miles per hour?
Created: 6 years ago |
Updated: 10 months ago
best des
1st plane will go by (3-1=2) hours to north 150×2=300 miles
2 nd plane will go by 2hours to west 200×2=400 miles
Now the distance between the plane is=√(400)^2+(300)^2
=√1600+900
=√2500
=500 miles
Answer is 500 miles
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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