convert each percentage 1:2:5 to percentage
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Percentage of 1 is
1÷1+2+5
=1×8×100
=100÷8
=12.5 percentage
Percentage of 2 in the ratio=
2÷1+2+5×100=
=2÷8×100
=1÷4×100
=25 percentage
Percentage of 5 in the ratio
=5÷1+2+5×100
=5÷8×100
=5×12.5
=62.5 percentage
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