Question

The price of mangoes in late season suddenly increased from Rs. 50 per kg to Rs. 90 per kg. Find the percent increase in price

Answer 1

$$\begin{gathered} \mathrm{Original}\mathrm{price}=\mathrm{Rs}50\mathrm{per}\mathrm{kg} \\ \mathrm{Increased}\mathrm{price}=\mathrm{Rs}90\mathrm{per}\mathrm{kg} \\ \mathrm{Increase}\mathrm{in}\mathrm{price}=\mathrm{Increased}\mathrm{price}-\mathrm{Original}\mathrm{price}=\mathrm{Rs}90-\mathrm{Rs}50=\mathrm{Rs}40 \\ \mathrm{Thus}, \\ \%\mathrm{increase}=\frac{\mathrm{Increase}\mathrm{in}\mathrm{price}}{\mathrm{Original}\mathrm{price}}\times 100=\frac{40}{50}\times 100=\mathbf{80}\mathbf{\%} \end{gathered}$$