Wednesday, December 29, 2010

पानी की टंकी और गणित... (Water tank and typical maths...)

विशेष नोट : अगर आप जवाब ढूंढ लेते हैं तो ठीक, वरना कमेंट लिख दीजिएगा, मैं जवाब आपको मेल के जरिये भेज दूंगा...

स्कूल में मौजूद पीने के पानी की टंकी में एक समान गति से लगातार पानी भरा जाता है...

70 बच्चे उस टंकी को 24 दिन में, तथा 30 बच्चे उस टंकी को 60 दिन में खाली कर सकते हैं...

अब क्या आप लोग मुझे बता सकते हैं, यदि मैं चाहूं कि वह टंकी 96 दिन में खाली हो तो मुझे कितने बच्चों की ज़रूरत होगी...?

Now, the same riddle in English...

Special Note: If you succeed in solving this one, well and good; but in case, you don't, just leave a comment, and I will mail the answer to you...

Drinkable Water in the school tank is being filled at a continuous and uniform pace...

It takes 24 days for 70 kids and 60 days for 30 kids to drink the water tank empty...

Now, can guys tell me, how many kids will be needed if I want the water tank to go empty in 96 days...?

30 comments:

  1. This comment has been removed by a blog administrator.

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  2. बिल्कुल सही, प्रकाश भाई... बधाई... :-)

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  3. pahle 70 bachche 24 din me
    then 30 bachche 60 din me=100 bachhe & 84 din
    then 6 bachhe 12 din
    total-106 bachche 96 din

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  4. Najo ji, mujhe afsos hai, lekin aapka jawaab bilkul galat hai... Ek baar phir koshish karein... :-)

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  5. my id is nazo.00786@gmail.com

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  6. SIr JI anSweR 175 childreN hOngE SayAD,...

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    Replies
    1. Shravan, tumhaara yeh jawaab bilkul galat hai, dost... Ek baar phir koshish karo... :-)

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  7. Na sIr JI merA anSWeR wrOnG haI pHiR sE sOcH raha Hu

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  8. QUeStIoN merI saMjdAni MaI to aA CHuKa HaI bUt YE sAmaJh MaI Na AA RahA haI kI kaIse SOLvE kaRu....

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    Replies
    1. Poore tareeke ke saath jawaab tumhe mail kar diya hai, Shravan... :-)

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  9. ThaNkS sIr, BaHuT hI aaSan LaG rahA haI anSWEr PaaNE ke BaaD...

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    Replies
    1. गणित में हमेशा ऐसा ही होता है, श्रवण... मैं हमेशा कहता हूं कि गणित फॉर्मूले रटने (या याद करने) का नाम हरगिज़ नहीं है, बल्कि अपने अंदर तर्कक्षमता को विकसित करने का नाम है, ताकि सवाल पढ़कर समझा जा सके, कौन-सा फॉर्मूला इस्तेमाल करना है... :-)

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  10. Replies
    1. Mujhe afsos hai, Sohit, lekin tumhaara jawaab galat hai... Ek baar phir koshish karo... Best of luck... :-)

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  11. 16 ho skte hai. Is trah ke paheli ke liye formule hote hai gurudev jo yad nhi rhte mjhe so ek andaj me 12, 15 bhe ho skte hai agar 16 nhi huye to.

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    Replies
    1. Mujhe behad afsos hai, Sohit, lekin tumhaara teeno jawaab galat hain... Ek baar phir koshish karo, dost... :-)

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  12. Tukke keval tukke he rah jate hai gurudev. Iska koi formula nhi mil rha hai.

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  13. Sir gee aap kee is paheli se mujhe sikh mili hai agar hum groum me kaam kare to kaam to niyaam anushaar jaldi hota hai lekin kaam me ruchi ke karan aur itne logo ke saath kaam karne me kaam aur bhee jaldi poora hota hai jaisa kee aapki paheli me hua hai

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  14. Replies
    1. Rajat, tumhaara jawaab bilkul galat hai... Ek baar phir koshish karo, dost... Best of luck... :-)

      Delete
  15. This comment has been removed by a blog administrator.

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    Replies
    1. Sohit, tumhaara jawaab sahi hai... Badhaai... :-)

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  16. This comment has been removed by a blog administrator.

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    Replies
    1. Rajat, tumne do jawaab diye hain is baar, aur unmein se ek theek hai... :-)

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  17. This comment has been removed by a blog administrator.

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    Replies
    1. Jawaab sahi hai, Rajat... Badhaai... :-)

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  18. NK Meghani ji, aapka jawaab galat hai... Ek baar phir koshish keejiye... Best of luck...

    ReplyDelete