Math Is Fun Forum

Agnishom

Real Member

From: Riemann Sphere

Registered: 2011-01-29

Posts: 25,002

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Who earns the greatest amt?

There are four people A,B,C & D. The following equations about their earnings are true:

Arrange A,B,C,D in the ascending order of their earnings.

Please show clearly how u derive this

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bumpkin

From: Bumpkinland

Registered: 2009-04-12

Posts: 109,606

Re: Who earns the greatest amt?

Hi Agnishom:

So using the first inequality B > D

Using the 2nd equation:

So C is the average of B and D.
B > D so B>C
B>A and C,A > D

B > A = C > D

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In mathematics, you don't understand things. You just get used to them.
If it ain't broke, fix it until it is.
Always satisfy the Prime Directive of getting the right answer above all else.