The ratio of 2 numbers is 5:2 and their H.C.F. is 20. Their L.C.M. is ?  Choose the correct answer:  A) 400  B) 300  C) 200  D) 100  E) 40
Let the numbers be 5x and 2x   Their H.C.F. = 20   so the numbers are 5*20 , 2*20 = 100, 40   L.C.M. = 200   Answer is 200
<result>C</result>
The ratio of 2 numbers is 5:2 and their H.C.F. is 20. Their L.C.M. is ?