Question

Cost of a toffee is $50\mathrm{paise}$and cost of a chocolate is $₹10$. Find the ratio of the cost of a toffee to the cost of a chocolate?

Answer 1

Cost of a toffee is $50\mathrm{paise}$

Cost of a chocolate is $₹10=10\times 100=1000\mathrm{paise}[\because ₹1=100\mathrm{paise}]$

$\begin{array}{rcl}\mathrm{Ratio}\mathrm{of}\mathrm{the}\mathrm{cost}\mathrm{of}\mathrm{a}\mathrm{toffee}\mathrm{to}\mathrm{the}\mathrm{cost}\mathrm{of}\mathrm{a}\mathrm{chocolate}& =& \frac{\mathrm{Cost}\mathrm{of}\mathrm{a}\mathrm{toffee}}{\mathrm{Cost}\mathrm{of}\mathrm{a}\mathrm{chocolate}}\\ & =& \frac{50}{1000}\\ & =& \frac{1}{20}\\ & =& 1:20\end{array}$

Hence, required ratio = $1:20$.