If a person walks at 15 km/hr instead of 12 km/hr, he would have walked 30 km more. The actual distance travelled by him is: A) 180 km B) 150 km C) 120 km D) 90 km

• 15x-12x=30
  x=10
  Actual distance =12km*10
• 4 years agoHelpfull: Yes(6) No(0)
• let dist= x km
  x/12 = x+30/15
  x= 120 km
• 5 years agoHelpfull: Yes(4) No(0)
• Let actual distance be x
  Here, time is constant(i.e.T1=T2)
  D1/D2=S1/S2
  (x+30)/x=15/12
  12x+360=15x
  3x=360
  x=120
• 4 years agoHelpfull: Yes(2) No(0)
• Let the actual distance travelled be x
  so the equation would be
  x/12=x+30/15
  solving above equation(cross multiplication) we get,
  15x=12x+360
  3x=360
  x=120.
• 4 years agoHelpfull: Yes(1) No(0)
• Let total time be t hr
  u1 = 15 km/hr u2 = 12 km/hr
  d1 = 15*t km d2 = 12*t km
  
  Then, d1-d2 = 30
  => 15t - 12t = 30
  => 3t = 30
  => t = 10
  So, Total distance = 10 * 12= 120
• 5 years agoHelpfull: Yes(0) No(0)
• Let d be distance and t be time
  d=12t
  d+30=15t
  Equate for d. 12t +30 =15t
  t=10
  12x10=120
• 4 years agoHelpfull: Yes(0) No(0)