A student multiplied a number by 3/5 instead of 5/3. What is the percentage error in the calculation?
1)34%
2)44%
3)54%
4)64%

• 64%
  
  error = Original value - Wrong value.
  = (5/3 x) - (3/5 x).
  = 16/15 x
  
  error% = error/original * 100;
  = ((16/15 x) / (5/3 x)) * 100
  = 64
  
• 13 years agoHelpfull: Yes(21) No(3)
• actual no =5/3 x
  mistake no = 3/5 x
  
  if we assume x as 15 then,
  actual=(5/3)*15=25
  mistake=(3/5)*15=9
  error=actual-mistake=25-9=16
  
  then
  for 25 it is 100%
  for 16 it is ?%
  
  (16*100)/25
  =64%
  
• 9 years agoHelpfull: Yes(2) No(0)