The ratio of two numbers is 4 : 5 and their H.C.F. is 4. Their L.C.M. is Select
A) 48
B) 22
C) 56
D) 80
E) 67
Explanation:   Let the numbers be 4x and 5x. Then, their H.C.F. = x. So, x = 4.   So, the numbers 16 and 20.   L.C.M. of 16 and 20 = 80.   Option 80
<result>D</result>
The ratio of two numbers is 4 : 5 and their H.C.F. is 4. Their L.C.M. is