Can anyone please tell me the answer for this riddle from (chapter linear equations of class 9) Who am I and my brother?when I am multiplied by 5 and added with 4 times of my brother's yields 50 where as when my brother when multiplied by 5 and added with 4 times of my yields 150?? Answer?
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This riddle was generated by me. Thank you for reposting.
now let me=X
my brother =y
so 5x+4y=50 -(i) and 5y+4x=150 -(ii)
=x-y=-100 -(iii)
also, 20x+16y=200 by multiplying (i) by 4, 25y+20x=750 multiplying (ii) by 5
=> 9y=550
=> y= 550/9
put value of y in (iii) to calculate value of x
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