Question

When the price of chair was reduced by $15$%, the number of chairs sold increased by $60$%, what was the effect on the sales rupees ?

• A. $48$%
• B. $36$%
• C. $54$%
• D. $55$%

Answer 1

The correct option is B $36$%

Let initial price of a table was $XRs$ and number of chair sold was $Y$.

So, Initial total earning $=X\times Y=XYRs$

Now, price reduce by $15\%$.

So, New price $=X-15\%ofX=0.85X$

Number of tables sold increased by $60\%$

$\therefore Numberoftablesold=Y+60\%ofY=1.6Y$

New total earning $=0.85X\times 1.6Y=1.36XYRs$

Increase in sales $=1.36XY-XY=0.36XYRs$

$Increaseinpercentage=\frac{Increase\times 100}{InitialEarning}=\frac{0.36XY\times 100}{XY}=36\%$