3. Playing with numbers::

Solution:

Volume of medicine bottle =

\frac{3}{2}

litres

Volume of one dose of medicine =

\frac{3}{14}

litres

So, number of doses in bottle =

\frac{\frac{3}{2}}{\frac{3}{14}}

\frac{3}{2} \times \frac{14}{3}

= 7 doses

Ans. 7 doses of medicine in the bottle