Travelling at 3/4th the speed a man is 20 minutes later then speed is?

• Let L be the distance, V be his usual speed.
  We have L/(3/4 V) = L/V + 20.
  So, 4/3 * L/V = L/V + 20,
  Or 1/3 * L/V = 20,
  we get L/V = 60 (min)
  
  
  Since V is his usual speed, so T = L/V his usual time for
  him walking from to the office.
  Another way , let T (min) be the usual time, then he spent 4 T/3
  when walking in 3/4 of usual speed.
  Since 4T/3 = T +20, we obtain T = 60 min.
  SACHIN
• 13 years agoHelpfull: Yes(16) No(3)
• Since V is his usual speed, so T = L/V his usual time for
  him walking from to the office.
  Another way , let T (min) be the usual time, then he spent 4 T/3
  when walking in 3/4 of usual speed.
  Since 4T/3 = T +20, we obtain T = 60 min.
• 13 years agoHelpfull: Yes(4) No(1)
• speed will be same
• 14 years agoHelpfull: Yes(1) No(12)
• Speed = 3/4 of normal speed;
  therefore time becomes 4/3.
  
  extra time=1/3 of normal time= 20 minutes
  
  therefore normal time = 60 minutes.
• 11 years agoHelpfull: Yes(1) No(0)