Question

Find the ratio between the L.C.M & H.C.F of 5, 15 and 20.

Answer 1

Dear Student,
$$\begin{gathered} 5=5\times 1 \\ 15=5\times 3 \\ 20=5\times 2\times 2 \\ \mathrm{So},\mathrm{L}.\mathrm{C}.\mathrm{M}.\mathrm{of}5,15\mathrm{and}20=5\times 2\times 2\times 3=60 \\ \mathrm{And}\mathrm{H}.\mathrm{C}.\mathrm{F}.\mathrm{of}5,15\mathrm{and}20=5 \\ \mathrm{Therefore},\mathrm{ratio}\mathrm{between}\mathrm{L}.\mathrm{C}.\mathrm{M}.\mathrm{and}\mathrm{H}.\mathrm{C}.\mathrm{F}.\mathrm{of}5,15\mathrm{and}20=\frac{5}{60}=\frac{1}{12}=1:12 \end{gathered}$$
Regards