Determine whether the following ratios form a proportion or not. If they form a proportion, write the middle terms and the extreme terms.

$₹30:₹44 \mathrm{and} 105 \mathrm{toffees}:154 \mathrm{toffees}$

Determine whether the following ratios form a proportion or not. If they form a proportion, write the middle terms and the extreme terms.

$36$ notebooks$: 69$ notebooks and $60$ water bottles$: 115$ water bottles

The ratio of number of boys to the number of girls in two different states is given here.

State A  Boy$:$Girl $=8:6$

State B Boy$:$Girl $= 3:4$

Determine whether the two ratios are in proportion or not.

A man earns $₹2400$ in $8$ days. How much will he earn in $15$ days? 

A man earns $₹2400$ in $8$ days. How many days will he take to earn $₹6000$?

The cost of $15$ dozen pencils is $₹180$. Find the cost of $36$ pencils.

The distance covered by a car in $2 hours$ is $72 km$. Find the distance it covers in $3 hours 20 minutes$.