In a straight line four points namely A,B,C and D are there.. If AB:BC=1:2 and BC:CD=8:5 then AB:BD=?
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A------------B------------C------------D
AB : BC = 1 : 2
BC :CD = 8 : 5
AB:BC:CD =4 : 8 : 5
AB:BD=AB:(BC+CD)
=4:(8+5)
=4:13
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