MIXTURES AND VARIATIONS

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ความคิดเห็น • 15

  • @SleepyClassesIAS
    @SleepyClassesIAS  12 ปีที่แล้ว +1

    Hi Kartik.
    The solution to the problem goes like this -
    Since the selling price is 5.4 and the profit percent is 33.3, you can find out the cost price to be 4.05.
    Now think that milk costing 4.50 was pure milk, what will be the quality of milk having cost 4.05.
    It'll come out to be 90% (4.05/4.50).
    So the answer is 90% or 9/10.

  • @kartikdsouza1880
    @kartikdsouza1880 11 ปีที่แล้ว

    Thanks a lot , I got it now
    great videos .

  • @RashadKhanrdk
    @RashadKhanrdk 5 ปีที่แล้ว

    Sir i got the ratio 9:1 not 9:10.
    I did,
    Take milk(pure) = x litres.
    Total price = 4.5x
    Take water = y litres.
    Milk sold at 5.4 / ltr (given)
    So,
    Total selling price = 5.4(x+y)
    Since profit = 100/3%
    [{5.4(x+y) - 4.5x}/4.5x]*100 = 100/3
    Solve this to get the ratio.
    I got x:y = 9:1
    Is there a mistake? Can't find one

  • @fastrack8716
    @fastrack8716 11 ปีที่แล้ว

    Great Work but could u please explain the logic behind 16+x in the 40 litre question. Thanks !

  • @anamikaangelsingh
    @anamikaangelsingh 10 ปีที่แล้ว

    thanks a lot for all the videos... they are superb... bt the qts which you pose at the end are lil difficult

  • @sunsshine
    @sunsshine 10 ปีที่แล้ว +2

    Sir, why you stopped teaching in Hindi ? I found when you explain in Hindi I am able to understand concepts in depth, but in English I really get sleepy. I think Hindi is your strength and you can express your ideas better in Hindi compared to English and we come to you to understand things which we didnot understand any where else. Thus, Please make videos in Hindi only. English is another level of struggle in understanding concepts of maths.

  • @rtsangart
    @rtsangart 10 ปีที่แล้ว

    SP - CP = 5.4 - 4.5 = 0.9 = 0.9* 100 = 90% Is this right?

  • @daaniyalkhan1242
    @daaniyalkhan1242 9 ปีที่แล้ว

    can we do this by alligation

  • @shivhareraghavendra
    @shivhareraghavendra 10 ปีที่แล้ว

    i m getting confused regarding the quality. am not getting the logic behind finding the quality from cost. sir plz can u explain.

  • @kartikdsouza1880
    @kartikdsouza1880 12 ปีที่แล้ว

    cold u please give the solution, i worked it out to be 13/37 , dosent seem correct to me
    .....

  • @kotanageswararao9102
    @kotanageswararao9102 4 ปีที่แล้ว

    3:2

  • @shivamkrishnam54
    @shivamkrishnam54 9 ปีที่แล้ว

    Honestly last vala nhi bana :(

    • @abhijeetkumar7457
      @abhijeetkumar7457 9 ปีที่แล้ว +3

      Look !!!! Carefully !!!!
      He sells it at a profit of (100/3)% now % means per 100 so now remove % and write it as (100/300) it gives (1/3) .
      that gives ratio between profit & CP ( profit / cost price ) it means that if ur COST PRICE is 3 THEN PROFIT is 1 & SP is 4 .
      But cost price is 4.5 . So multiply it with 1.5 to get the cost price 4.5 so now 3*1.5=4.5 then profit is 1.5 & SP is 4*1.5=6.
      SO SP of PURE milk HAS TO BE 6 Rs TO GET A profit of (100/3)% but he gets this profit by SP of 5.4 Rs .
      SO 6 Rs is cost of 1L milk .
      1Rs is cost of 1L/6 milk
      5.4 Rs is cost of (1L/6)*5.4=0.9L REST 0.1 L is water . Now get the ratio M:W=9:1

    • @shivamkrishnam54
      @shivamkrishnam54 9 ปีที่แล้ว

      Abhijeet kumar Got it bro !!
      Thanks for ur time :D :*

  • @SleepyClassesIAS
    @SleepyClassesIAS  11 ปีที่แล้ว +2

    Hi Kartik.
    The solution to the problem goes like this -
    Since the selling price is 5.4 and the profit percent is 33.3, you can find out the cost price to be 4.05.
    Now think that milk costing 4.50 was pure milk, what will be the quality of milk having cost 4.05.
    It'll come out to be 90% (4.05/4.50).
    So the answer is 90% or 9/10.