The sum of the digits of a two-digits number is 10,while when the digits are reversed, the number decreases by 54.Find the changed number.

(a)28 (b)19 (c)37 (d)46

• This can't be Elitmus question!!!!!!!
• 9 years agoHelpfull: Yes(27) No(1)
• answer is 28
  because the original no is 82 i.e 8+2=10 and when the digits are reversed i.e 28
  the difference is 82-28=54 so number decrease by 54
• 9 years agoHelpfull: Yes(21) No(0)
• x+y=10.........(1)
  10y+x-(10x+y)=54.........(2)
  solving eqn. (1) & (2),we get
  x=8;
  y=2
  so changed no. is (10*2+8)=28
  ans- (a)
• 9 years agoHelpfull: Yes(8) No(0)
• If this is Elitmus question then i am obama
• 7 years agoHelpfull: Yes(2) No(0)
• answer: 28
  solve it by the options .
  only option a 28 matches both conditions(2+8=10 & when the digits are reversed ,28 becomes 82,
  82-28=54)
• 9 years agoHelpfull: Yes(1) No(0)
• 
  its 28 do it by the options too simple
  
• 9 years agoHelpfull: Yes(0) No(0)
• 28 is changed number...... 82-28=54..... ans is 28
• 9 years agoHelpfull: Yes(0) No(0)
• ans: 28
  2+8=10;
  if we reverse the no, it will become 82..
  82-28=54.. the conditions satisfied
• 9 years agoHelpfull: Yes(0) No(0)
• Answer 28
  
  x+y = 10
  Nd then 10x+y-54=10y+x
  Then x=8,y=2
  The 2 digit no formula= 10*y+x=28
• 9 years agoHelpfull: Yes(0) No(0)
• 2+8=10
  reverse of 28 is 82
  82-28=54
  ans is 28
• 9 years agoHelpfull: Yes(0) No(0)
• Let the ones digit be y and tens digit be x then the original number is: 10*x+y and reverse number is 10*y+x.
  According to the question: x+y=10
  and (10*x+y)-(10*y+x)=54
  Solving this two simultaneously we get x=8,y=2
  hence ans is 28
• 9 years agoHelpfull: Yes(0) No(0)
• 54+28(1st option)=82
  8+2=10 ...ans
  if 1st option work then try next option
• 9 years agoHelpfull: Yes(0) No(0)
• 82-28=54 so the answer is 28
• 9 years agoHelpfull: Yes(0) No(0)
• this type of ques does not ask in elitmus exam bro....
• 9 years agoHelpfull: Yes(0) No(0)
• first time i have seen such easy to evaluate question :)
• 9 years agoHelpfull: Yes(0) No(0)
• number=10x+y
  reversing =10y+x
  a/q,
  10x+y-10y-x=54
  or, x-y=6
  now solving x+y=10 and x-y=6 we get number=82..
  so reversed number=28. . (a)
• 9 years agoHelpfull: Yes(0) No(0)
• option (a)
  the possible pair of two digit number with sum 10 is :(91),(82),(73),(64),(55),(46),(37),(28),(19)
  only
  82-54=28
  
• 9 years agoHelpfull: Yes(0) No(1)
• wah!!! very hard question please explain
• 9 years agoHelpfull: Yes(0) No(0)
• this type of question u have to go with the option ..... by rejection
• 9 years agoHelpfull: Yes(0) No(1)
• plz ..plz ..
  these types question is impossible to be asked in e litmus ..
• 8 years agoHelpfull: Yes(0) No(0)