Question

When the price of chair was reduced by $20$%, the number of chairs sold increased by $80$%, what was the effect on the sales rupees ?

• A. $34$% increase
• B. $44$% increase
• C. $54$% increase
• D. $64$% increase

Answer 1

Answer: (B)

$44$% increase

Here we just think that price of $100chairs=Rs.100$, as well as price, reduce

$=\frac{20}{100}\times 100=20=100-20=Rs.80$

On the other hand, chairs sale also increased $=\frac{80}{100}\times 100=100+80=180$ chairs.

So, the effect on sales rupees

$=\frac{80}{180}\times 100$

$=0.44\times 100$

$=44\%$ increase

Hence, this is the answer.