Instead of multiplying a number by 7, the number is divided by 7. What is the percentage of error
obtained ?

• Let the number be 100
  then 7*100=700 and 100/7=14.28
  error=700-14.28=685.72
  
  error percentage= (685.72/700)*100=97.96
• 13 years agoHelpfull: Yes(25) No(0)
• let no be x
  instead of 7*x it's x/7 is done
  then % error will be (7x-x/7)/7x
  =((49x-x)/7)/7x
  =(48x/7)/7x
  =48x/49x
  =48/49=97.96
  so 48/49 or 97.96 is the ans
• 13 years agoHelpfull: Yes(10) No(1)
• Let the number be 100. 7*100=700 and 10/7=14.28
  Difference is 700-14.28= 685.7[ans]
• 13 years agoHelpfull: Yes(1) No(12)