Question

Find the ratio of the cost of a pen to the cost of a pencil, if the cost of a dozen pencils is $₹18$ and the cost of $8$ ball pens is $₹104$

Answer 1

The cost of a dozen pencils $=₹18$

so, the cost of a one pencil $=\frac{18}{12}$ $\left[1dozen=12\right]$

$=₹\frac{3}{2}$

Now, the cost of $8$ball pens $=₹104$

so, the cost of one ball pen $=\frac{104}{8}$

$=₹13$

Ratio $=$Cost of pen : Cost of pencil

$=13:\frac{3}{2}$

$=26:3$

Hence, the required ratio is $26:3$