Problems on H.C.F and L.C.M - Quantitative Aptitude (MCQ) questions for Q. 20390

Q.  The ratio of two numbers is 4 : 5 and their H.C.F is 4. Find their L.C.M.
- Published on 07 Jul 17

a. 96
b. 80
c. 73
d. 48

ANSWER: 80
 
Let the numbers be 4x and 5x.

H.C.F = x. So, x=4.
So, the numbers are 16 and 20
L.C.M of 16 and 20 = 80.

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