Answer:

1 metre = 100 cm

5 m 20 cm = 520 cm

6 m 60 cm = 660 cm

520 cm to 660 cm

fraction = 520\660 ÷ 20/20

=26/33

Therefore, Required ratio = 26 is to 33

[tex]1 \: m =100 \: cm [/tex]

[tex]5m \: 20 \: cm =520 \: cm \\ \\ 6m \: 60 \: cm=660 \: cm[/tex]

[tex]520 \: cm \: to \: 660 \: cm \\ \\ = \frac{520 \div 20}{660 \div 20} \\ \\ = \frac{26}{33} [/tex]