Question

Cost of $2$ dozen bananas is Rs. $30\frac{3}{7}$. Find the cost of $1$ banana.

Answer 1

Let the cost of $1$ banana is Rs. $x$

Now, $2$ dozen bananas $=2\times 12$ bananas $=24$ bananas

Cost of $24$ bananas $=24\times x=Rs.24x$

So,

$24x=30\frac{3}{7}$

$24x=\frac{213}{7}$

$x=\frac{213}{7}\times \frac{1}{24}$

$x=\frac{71}{7}\times \frac{1}{8}$

$x=\frac{71}{56}$

$x=1\frac{15}{56}$

$\therefore$ the cost of $1$ banana$=1\frac{15}{56}$