Rahul Sofat Solutions for Chapter: Percentage and Its Applications, Exercise 7: EXEMPLAR PROBLEMS

The interest on $₹ 5000$ at the rate of $15\%$ per annum for one month is:

A farmer bought a buffalo for $₹44000$ and a cow for $₹18000$ He sold the buffalo at a loss of $5\%$but made a profit of $10\%$ on the cow. The net result of the transaction is

$20\%$ of $700 \mathrm{m}$ is:

If $90\%$ of $x$ is $315 \mathrm{km}$, then the value of $x$ is:

$0.05$ is equivalent to $5\%$.

Suhana sells a sofa set for $₹ 9600$ making a profit of $20\%$. What is the $\mathrm{C}.\mathrm{P}.$ of the sofa set $?$

What's the Error? A student said that the ratios $\frac{3}{4}$ and $\frac{9}{16}$ were proportional. What error did the student make?