The L.C.M. (Lowest (or Least) Common Multiple) of two numbers is 45 times to their H.C.F (Highest Common Factor). If one of the numbers is 125 and sum of L.C.M. and H.C.F. is 1150, the other number is:

a) 215
b) 220
c) 225
d) 235

• Ans: c) 225
  
  let hcf be 'a', lcm be 'b' and other no. be 'x'
  a=45b
  a+b=1150
  b=25 a=1125
  
  lcm*hcf= product of 2 no.
  25*1125=125*x
  x=225
• 11 years agoHelpfull: Yes(6) No(0)
• 46H.C.F.=1150
  H.C.F.=25
  L.C.M.=25X45
  H.C.F.X L.C.M.=N1 X N2
  25 X 25 X 45 =125 X N2
  N2 = 225
  
• 9 years agoHelpfull: Yes(0) No(0)