The ratio of 2 numbers is 1:2 and their H.C.F. and L.C.M are 10 and 20. Find the numbers. Choose the correct choice from the following choices
A) 20, 10
B) 10, 20
C) 20, 30
D) 30, 20
E) 10, 10
Let the numbers be x and 2x   Their H.C.F. = 10   L.C.M = 20   ie) 2x^2 = 200   x^2 = 100, x = 10 t The numbers are x and 2x , ie)10, 20 respectively.   Answer is 10, 20
<result>B</result>
The ratio of 2 numbers is 1:2 and their H.C.F. and L.C.M are 10 and 20. Find the numbers.