Aptitude - 100 Bananas

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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?

Total Answers and Comments: 5

Last Update: November 10, 2009 Asked by: umairfaridi

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Best Rated Answer

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Submitted by: sweetuu

let,
he ate 'x' bnanas 1st day...then next four days he eats as following...
x+6, x+12, x+18 and x+24
hence, by summing all these we get,
x+x+6+x+12+x+18+x+24=100
=> 5x+60=100
=> 5x=40
=> x=40
hence, a man ate '6' bnanas on 1st day.

Above answer was rated as good by the following members:
anshulsolanki89, prani1986

February 10, 2009 02:03:53

sachin.jain.mca

Member Since: January 2007 Contribution: 3

RE: 100 Bananas

8 5x+(4*(4+1)/2) 100

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February 10, 2009 23:15:37

neerajviku

Member Since: September 2008 Contribution: 1

RE: 100 Bananas

LET THE BANANA EATEN ON FIRST DAY BE X-12

THEN ON FOLLOWING DAY MAN ATE X-6 X x+6 X+12

Then total banana eaten during five day is

x-12+x-6+x+x+6+x+12 100
> 5x 100
> x 20

so banana eaten on first day is 20-12 8

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February 11, 2009 06:35:35

sweetuu

Member Since: February 2009 Contribution: 2

RE: 100 Bananas

let
he ate 'x' bnanas 1st day...then next four days he eats as following...
x+6 x+12 x+18 and x+24
hence by summing all these we get
x+x+6+x+12+x+18+x+24 100
> 5x+60 100
> 5x 40
> x 40
hence a man ate '6' bnanas on 1st day.

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March 25, 2009 01:47:16

vijay pal saharan

Member Since: March 2009 Contribution: 3

RE: 100 Bananas

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.

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November 10, 2009 03:45:42

zhangchaofan

Member Since: November 2009 Contribution: 2

RE: 100 Bananas

You can use the formula to solve this problem.

5*a+5(5-1)6/2 100

a 8

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