Answers

2016-04-24T16:17:20+05:30
Let,
the large number = x
     smaller number = y
according to the question,
2x -20 = y.................................(1) ⇒ 2x -y = 20...............(3)
2y - 5= x...................................(2) ⇒ -x +2y = 5...............(4)
(4) ×2 = -2x + 4y = 15.......................................................(5)
solving (3) & (5),
3 y = 15
⇒ y = 5
substitute y = 5 in (3)
we get,
2x - 5 = 20
2x = 20+5
2x = 25
  x = 25/2
     = 14.5
therefore, the numbers are 14.5( greater ) ,5 (smaller)




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2016-04-24T16:32:03+05:30
15 and 10. 15*2=30; 30-20=10
 10*2=20; 20-5=15
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