Question #1ea10
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"Can mixtures be separated by chromatography?"
I'm not sure what you mean by "find two numbers". I'll just show you how to get all three and hopefully you can get your answer from that.
Let's let #x# be the middle of the three even integers. Then the even integer less than #x# has to be #x-2# and the one above has to be #x+2# because the even integers are consecutive.
We know that the sum is #210#. Thus:
#(x)+(x-2)+(x+2)=210#
#3x=210#
#x=70#
Thus, our middle even integer is #70#. The other even integers are #70-2=68# and #70+2=72#.
As we can see, #68,70,72# are consecutive even integers and #68+70+72=210#.
Any two numbers from the set #{68,70,72}#
Any number is even when it is doubled, so #e=2n, ninZZ#
So, a set of even numbers will be #E={2n,2n+2,2n+4,\cdots}#
Three consecutive numbers that add up to 210 will follow the formula:
#210=2n+2n+2+2n+4=6n+6#
#6(n+1)=210#
#n+1=210/6=35#
#n=35-1=34#
The three consecutive numbers that add up to 210 are #{2(34),2(34)+2,2(24)+4}={68,70,72}#
Let the consecutive numbers be #x, x+2, x+4#
#x + (x+2) + (x+4) = 210 -> "Statement"#
Solving..
#x + x + 2 + x + 4 = 210#
#3x + 6 = 210#
#3x = 210 - 4#
#3x = 204#
#x = 204/3#
#x = 68#
Hence
The numbers are
#x = 68#,
#x + 2 = 70#
#x + 4 = 72#