Answered Questions

  • 100 Bananas

    A man ate 100 bananas in five days, each day eating 6 more than the previous day. How many bananas did he eat on the first day?

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    vijay pal saharan  

    • Member Since Mar-2009 | Mar 25th, 2009


    Let the number of bananas he ate first day be x.
    then x+x+6+x+12+x+18+x+24=100

    =>5x+60=100
    =>5x=40
    x=8
    that is, he ate 8 bananas on first day.

    Dhivya

    • Aug 14th, 2015

    8

    selva

    • Aug 12th, 2015

    8

  • 4 Wheeler : 2 Wheeler - Puzzle

    In a theatre the ratio of car & two wheeler is 1:8. Total Number of tyres are 100. Find how many are cars and how many are two wheelers?

    Vasyl, Ukraine

    • Sep 7th, 2011

    There will be system:
    2x + 4y = 100
    8y=x

    where x - amount of bikes; y - amount of cars;

    16y + 4y =100 >> 20y=100 >> y =5 (cars)
    x = 5*8 = 40 (bikes)

    Dipayan Talapatra

    • Sep 2nd, 2011

    Wheel ratio= 4:16=1:4
    so,
    cars=100*1/5=20
    and
    bike=100-20=80