hree number are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F. is:  Choose the correct choice from the following:
A) 40
B) 50
C) 60
D) 70
E) 80
Let the numbers be 3x, 4x and 5x.   Then, their L.C.M. = 60x.   So, 60x = 2400 or x = 40.   The numbers are (3 x 40), (4 x 40) and (5 x 40).   Hence, required H.C.F. = 40.   40NSWER :40
<result>A</result>
hree number are in the ratio of 3 : 4 : 5 and their L.C.M. is 2400. Their H.C.F. is: