The ratio of the number of letters in English alphabet to the number of single digit numbers is 

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If $1:4::8:32$, how many more proportions can you form with the numbers $1,4,8,32?$

Find the ratio of 

$80\mathrm{p} \mathrm{to} \mathrm{one} \mathrm{rupee} 40 \mathrm{paisa}$

Find the ratio of :

$6\mathrm{kg} \mathrm{to} 1\mathrm{kg} 200\mathrm{g}$

Find the ratio of 

$3 \mathrm{hours} \mathrm{to} 15 \mathrm{mins}$